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Finding the Fourth Proportional to 630,133.60, 945,891.60 and 393,743.20

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Solution

The fourth proportional to 630,133.60, 945,891.60 and 393,743.20 is: 591,046.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,133.60 : 945,891.60 = 393,743.20 : x
  2. Step 2: Convert to fraction form
    630,133.60/945,891.60 = 393,743.20/x
  3. Step 3: Cross multiply
    630,133.60x = 945,891.60 × 393,743.20
  4. Step 4: Simplify right side
    630,133.60x = 372,438,385,437.12
  5. Step 5: Solve for x
    x = 372,438,385,437.12/630,133.60
  6. Step 6: Final answer
    x = 591,046.70

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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.