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Finding the Fourth Proportional to 672,442.47, 927,928.46 and 370,636.47

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Solution

The fourth proportional to 672,442.47, 927,928.46 and 370,636.47 is: 511,455.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,442.47 : 927,928.46 = 370,636.47 : x
  2. Step 2: Convert to fraction form
    672,442.47/927,928.46 = 370,636.47/x
  3. Step 3: Cross multiply
    672,442.47x = 927,928.46 × 370,636.47
  4. Step 4: Simplify right side
    672,442.47x = 343,924,126,273.80
  5. Step 5: Solve for x
    x = 343,924,126,273.80/672,442.47
  6. Step 6: Final answer
    x = 511,455.10

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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.