Home / 638,971,892.80-958,457,839.20-570,097,139.20

Finding the Fourth Proportional to 638,971,892.80, 958,457,839.20 and 570,097,139.20

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Solution

The fourth proportional to 638,971,892.80, 958,457,839.20 and 570,097,139.20 is: 855,145,708.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,971,892.80 : 958,457,839.20 = 570,097,139.20 : x
  2. Step 2: Convert to fraction form
    638,971,892.80/958,457,839.20 = 570,097,139.20/x
  3. Step 3: Cross multiply
    638,971,892.80x = 958,457,839.20 × 570,097,139.20
  4. Step 4: Simplify right side
    638,971,892.80x = 546,414,072,171,733,696
  5. Step 5: Solve for x
    x = 546,414,072,171,733,696/638,971,892.80
  6. Step 6: Final answer
    x = 855,145,708.80

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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.