Home / 721,758,121.13-995,855,490.60-408,492,325.91

Finding the Fourth Proportional to 721,758,121.13, 995,855,490.60 and 408,492,325.91

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Solution

The fourth proportional to 721,758,121.13, 995,855,490.60 and 408,492,325.91 is: 563,622,789.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,758,121.13 : 995,855,490.60 = 408,492,325.91 : x
  2. Step 2: Convert to fraction form
    721,758,121.13/995,855,490.60 = 408,492,325.91/x
  3. Step 3: Cross multiply
    721,758,121.13x = 995,855,490.60 × 408,492,325.91
  4. Step 4: Simplify right side
    721,758,121.13x = 406,799,325,625,438,208
  5. Step 5: Solve for x
    x = 406,799,325,625,438,208/721,758,121.13
  6. Step 6: Final answer
    x = 563,622,789.57

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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.