Home / 820,399,906.13-1,132,151,925.80-449,121,937.51

Finding the Fourth Proportional to 820,399,906.13, 1,132,151,925.80 and 449,121,937.51

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Solution

The fourth proportional to 820,399,906.13, 1,132,151,925.80 and 449,121,937.51 is: 619,788,304.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,399,906.13 : 1,132,151,925.80 = 449,121,937.51 : x
  2. Step 2: Convert to fraction form
    820,399,906.13/1,132,151,925.80 = 449,121,937.51/x
  3. Step 3: Cross multiply
    820,399,906.13x = 1,132,151,925.80 × 449,121,937.51
  4. Step 4: Simplify right side
    820,399,906.13x = 508,474,266,465,312,960
  5. Step 5: Solve for x
    x = 508,474,266,465,312,960/820,399,906.13
  6. Step 6: Final answer
    x = 619,788,304.05

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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.