Home / 688,666,105.90-1,032,999,158.85-378,729,714.70

Finding the Fourth Proportional to 688,666,105.90, 1,032,999,158.85 and 378,729,714.70

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Solution

The fourth proportional to 688,666,105.90, 1,032,999,158.85 and 378,729,714.70 is: 568,094,572.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,666,105.90 : 1,032,999,158.85 = 378,729,714.70 : x
  2. Step 2: Convert to fraction form
    688,666,105.90/1,032,999,158.85 = 378,729,714.70/x
  3. Step 3: Cross multiply
    688,666,105.90x = 1,032,999,158.85 × 378,729,714.70
  4. Step 4: Simplify right side
    688,666,105.90x = 391,227,476,716,600,448
  5. Step 5: Solve for x
    x = 391,227,476,716,600,448/688,666,105.90
  6. Step 6: Final answer
    x = 568,094,572.05

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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.