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Finding the Fourth Proportional to 704,637.83, 972,397.28 and 418,393.55

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Solution

The fourth proportional to 704,637.83, 972,397.28 and 418,393.55 is: 577,381.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,637.83 : 972,397.28 = 418,393.55 : x
  2. Step 2: Convert to fraction form
    704,637.83/972,397.28 = 418,393.55/x
  3. Step 3: Cross multiply
    704,637.83x = 972,397.28 × 418,393.55
  4. Step 4: Simplify right side
    704,637.83x = 406,844,749,989.54
  5. Step 5: Solve for x
    x = 406,844,749,989.54/704,637.83
  6. Step 6: Final answer
    x = 577,381.36

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1.5x scale

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.