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Finding the Fourth Proportional to 944,862.72, 1,303,893 and 515,146.56

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Solution

The fourth proportional to 944,862.72, 1,303,893 and 515,146.56 is: 710,892.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    944,862.72 : 1,303,893 = 515,146.56 : x
  2. Step 2: Convert to fraction form
    944,862.72/1,303,893 = 515,146.56/x
  3. Step 3: Cross multiply
    944,862.72x = 1,303,893 × 515,146.56
  4. Step 4: Simplify right side
    944,862.72x = 671,695,993,558.08
  5. Step 5: Solve for x
    x = 671,695,993,558.08/944,862.72
  6. Step 6: Final answer
    x = 710,892.68

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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.