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Finding the Fourth Proportional to 688,477,593.76, 950,102,296.87 and 391,136,151.87

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Solution

The fourth proportional to 688,477,593.76, 950,102,296.87 and 391,136,151.87 is: 539,769,717.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,477,593.76 : 950,102,296.87 = 391,136,151.87 : x
  2. Step 2: Convert to fraction form
    688,477,593.76/950,102,296.87 = 391,136,151.87/x
  3. Step 3: Cross multiply
    688,477,593.76x = 950,102,296.87 × 391,136,151.87
  4. Step 4: Simplify right side
    688,477,593.76x = 371,619,356,280,580,160
  5. Step 5: Solve for x
    x = 371,619,356,280,580,160/688,477,593.76
  6. Step 6: Final answer
    x = 539,769,717.49

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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.