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Finding the Fourth Proportional to 692,648, 955,844.92 and 386,729.08

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Solution

The fourth proportional to 692,648, 955,844.92 and 386,729.08 is: 533,680.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,648 : 955,844.92 = 386,729.08 : x
  2. Step 2: Convert to fraction form
    692,648/955,844.92 = 386,729.08/x
  3. Step 3: Cross multiply
    692,648x = 955,844.92 × 386,729.08
  4. Step 4: Simplify right side
    692,648x = 369,653,026,534.27
  5. Step 5: Solve for x
    x = 369,653,026,534.27/692,648
  6. Step 6: Final answer
    x = 533,680.93

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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.