Home / 457,964.20-687,011.10-142,388.20

Finding the Fourth Proportional to 457,964.20, 687,011.10 and 142,388.20

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Solution

The fourth proportional to 457,964.20, 687,011.10 and 142,388.20 is: 213,602.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,964.20 : 687,011.10 = 142,388.20 : x
  2. Step 2: Convert to fraction form
    457,964.20/687,011.10 = 142,388.20/x
  3. Step 3: Cross multiply
    457,964.20x = 687,011.10 × 142,388.20
  4. Step 4: Simplify right side
    457,964.20x = 97,822,273,909.02
  5. Step 5: Solve for x
    x = 97,822,273,909.02/457,964.20
  6. Step 6: Final answer
    x = 213,602.45

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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.