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Finding the Fourth Proportional to 474,008.40, 711,012.60 and 442,904.40

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Solution

The fourth proportional to 474,008.40, 711,012.60 and 442,904.40 is: 664,356.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,008.40 : 711,012.60 = 442,904.40 : x
  2. Step 2: Convert to fraction form
    474,008.40/711,012.60 = 442,904.40/x
  3. Step 3: Cross multiply
    474,008.40x = 711,012.60 × 442,904.40
  4. Step 4: Simplify right side
    474,008.40x = 314,910,608,995.44
  5. Step 5: Solve for x
    x = 314,910,608,995.44/474,008.40
  6. Step 6: Final answer
    x = 664,356.60

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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.