Home / 1,431,606.29-1,975,654.40-787,042.71

Finding the Fourth Proportional to 1,431,606.29, 1,975,654.40 and 787,042.71

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Solution

The fourth proportional to 1,431,606.29, 1,975,654.40 and 787,042.71 is: 1,086,139.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,606.29 : 1,975,654.40 = 787,042.71 : x
  2. Step 2: Convert to fraction form
    1,431,606.29/1,975,654.40 = 787,042.71/x
  3. Step 3: Cross multiply
    1,431,606.29x = 1,975,654.40 × 787,042.71
  4. Step 4: Simplify right side
    1,431,606.29x = 1,554,924,389,064.21
  5. Step 5: Solve for x
    x = 1,554,924,389,064.21/1,431,606.29
  6. Step 6: Final answer
    x = 1,086,139.68

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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.