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Finding the Fourth Proportional to 692,061.33, 955,044.77 and 390,255.33

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Solution

The fourth proportional to 692,061.33, 955,044.77 and 390,255.33 is: 538,552.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,061.33 : 955,044.77 = 390,255.33 : x
  2. Step 2: Convert to fraction form
    692,061.33/955,044.77 = 390,255.33/x
  3. Step 3: Cross multiply
    692,061.33x = 955,044.77 × 390,255.33
  4. Step 4: Simplify right side
    692,061.33x = 372,711,309,929.85
  5. Step 5: Solve for x
    x = 372,711,309,929.85/692,061.33
  6. Step 6: Final answer
    x = 538,552.43

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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.