Home / 901,218,843.54-1,243,665,543.15-499,331,126.43

Finding the Fourth Proportional to 901,218,843.54, 1,243,665,543.15 and 499,331,126.43

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Solution

The fourth proportional to 901,218,843.54, 1,243,665,543.15 and 499,331,126.43 is: 689,067,834.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    901,218,843.54 : 1,243,665,543.15 = 499,331,126.43 : x
  2. Step 2: Convert to fraction form
    901,218,843.54/1,243,665,543.15 = 499,331,126.43/x
  3. Step 3: Cross multiply
    901,218,843.54x = 1,243,665,543.15 × 499,331,126.43
  4. Step 4: Simplify right side
    901,218,843.54x = 621,000,916,563,267,328
  5. Step 5: Solve for x
    x = 621,000,916,563,267,328/901,218,843.54
  6. Step 6: Final answer
    x = 689,067,834.09

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Double scale
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1.5x scale

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.