Home / 766,945,246.40-1,150,417,869.60-639,399,406.40

Finding the Fourth Proportional to 766,945,246.40, 1,150,417,869.60 and 639,399,406.40

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Solution

The fourth proportional to 766,945,246.40, 1,150,417,869.60 and 639,399,406.40 is: 959,099,109.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,945,246.40 : 1,150,417,869.60 = 639,399,406.40 : x
  2. Step 2: Convert to fraction form
    766,945,246.40/1,150,417,869.60 = 639,399,406.40/x
  3. Step 3: Cross multiply
    766,945,246.40x = 1,150,417,869.60 × 639,399,406.40
  4. Step 4: Simplify right side
    766,945,246.40x = 735,576,502,934,192,512
  5. Step 5: Solve for x
    x = 735,576,502,934,192,512/766,945,246.40
  6. Step 6: Final answer
    x = 959,099,109.60

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Half scale
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Double scale
Find fourth proportional to 766,945,247.40, 1,150,417,871.10 and 639,399,407.40
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.