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Finding the Fourth Proportional to 721,371.53, 995,406.14 and 415,547.93

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Solution

The fourth proportional to 721,371.53, 995,406.14 and 415,547.93 is: 573,406.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,371.53 : 995,406.14 = 415,547.93 : x
  2. Step 2: Convert to fraction form
    721,371.53/995,406.14 = 415,547.93/x
  3. Step 3: Cross multiply
    721,371.53x = 995,406.14 × 415,547.93
  4. Step 4: Simplify right side
    721,371.53x = 413,638,957,048.13
  5. Step 5: Solve for x
    x = 413,638,957,048.13/721,371.53
  6. Step 6: Final answer
    x = 573,406.27

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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.