Home / 1,215,785,486.21-1,677,785,406.12-658,868,533.29

Finding the Fourth Proportional to 1,215,785,486.21, 1,677,785,406.12 and 658,868,533.29

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Solution

The fourth proportional to 1,215,785,486.21, 1,677,785,406.12 and 658,868,533.29 is: 909,239,353.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,785,486.21 : 1,677,785,406.12 = 658,868,533.29 : x
  2. Step 2: Convert to fraction form
    1,215,785,486.21/1,677,785,406.12 = 658,868,533.29/x
  3. Step 3: Cross multiply
    1,215,785,486.21x = 1,677,785,406.12 × 658,868,533.29
  4. Step 4: Simplify right side
    1,215,785,486.21x = 1,105,440,009,705,651,200
  5. Step 5: Solve for x
    x = 1,105,440,009,705,651,200/1,215,785,486.21
  6. Step 6: Final answer
    x = 909,239,353.69

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.