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Finding the Fourth Proportional to 531,729.40, 797,594.10 and 307,780.60

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Solution

The fourth proportional to 531,729.40, 797,594.10 and 307,780.60 is: 461,670.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,729.40 : 797,594.10 = 307,780.60 : x
  2. Step 2: Convert to fraction form
    531,729.40/797,594.10 = 307,780.60/x
  3. Step 3: Cross multiply
    531,729.40x = 797,594.10 × 307,780.60
  4. Step 4: Simplify right side
    531,729.40x = 245,483,990,654.46
  5. Step 5: Solve for x
    x = 245,483,990,654.46/531,729.40
  6. Step 6: Final answer
    x = 461,670.90

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.