Home / 638,971,969.30-958,457,953.95-570,097,215.70

Finding the Fourth Proportional to 638,971,969.30, 958,457,953.95 and 570,097,215.70

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Solution

The fourth proportional to 638,971,969.30, 958,457,953.95 and 570,097,215.70 is: 855,145,823.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,971,969.30 : 958,457,953.95 = 570,097,215.70 : x
  2. Step 2: Convert to fraction form
    638,971,969.30/958,457,953.95 = 570,097,215.70/x
  3. Step 3: Cross multiply
    638,971,969.30x = 958,457,953.95 × 570,097,215.70
  4. Step 4: Simplify right side
    638,971,969.30x = 546,414,210,912,413,888
  5. Step 5: Solve for x
    x = 546,414,210,912,413,888/638,971,969.30
  6. Step 6: Final answer
    x = 855,145,823.55

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Double scale
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Similar ratio
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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.