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Finding the Fourth Proportional to 577,295.20, 866,979.60 and 419,701.60

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Solution

The fourth proportional to 577,295.20, 866,979.60 and 419,701.60 is: 630,306.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,295.20 : 866,979.60 = 419,701.60 : x
  2. Step 2: Convert to fraction form
    577,295.20/866,979.60 = 419,701.60/x
  3. Step 3: Cross multiply
    577,295.20x = 866,979.60 × 419,701.60
  4. Step 4: Simplify right side
    577,295.20x = 363,872,725,287.36
  5. Step 5: Solve for x
    x = 363,872,725,287.36/577,295.20
  6. Step 6: Final answer
    x = 630,306.17

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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.