Home / 628,448,839.05-867,194,155.08-387,006,432.30

Finding the Fourth Proportional to 628,448,839.05, 867,194,155.08 and 387,006,432.30

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Solution

The fourth proportional to 628,448,839.05, 867,194,155.08 and 387,006,432.30 is: 534,028,699.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,448,839.05 : 867,194,155.08 = 387,006,432.30 : x
  2. Step 2: Convert to fraction form
    628,448,839.05/867,194,155.08 = 387,006,432.30/x
  3. Step 3: Cross multiply
    628,448,839.05x = 867,194,155.08 × 387,006,432.30
  4. Step 4: Simplify right side
    628,448,839.05x = 335,609,716,068,923,776
  5. Step 5: Solve for x
    x = 335,609,716,068,923,776/628,448,839.05
  6. Step 6: Final answer
    x = 534,028,699.26

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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.