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Finding the Fourth Proportional to 692,407.47, 955,519.93 and 386,481.20

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Solution

The fourth proportional to 692,407.47, 955,519.93 and 386,481.20 is: 533,342.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,407.47 : 955,519.93 = 386,481.20 : x
  2. Step 2: Convert to fraction form
    692,407.47/955,519.93 = 386,481.20/x
  3. Step 3: Cross multiply
    692,407.47x = 955,519.93 × 386,481.20
  4. Step 4: Simplify right side
    692,407.47x = 369,290,489,170.32
  5. Step 5: Solve for x
    x = 369,290,489,170.32/692,407.47
  6. Step 6: Final answer
    x = 533,342.73

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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.