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Finding the Fourth Proportional to 418,739.60, 577,614.42 and 263,443.88

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Solution

The fourth proportional to 418,739.60, 577,614.42 and 263,443.88 is: 363,397.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,739.60 : 577,614.42 = 263,443.88 : x
  2. Step 2: Convert to fraction form
    418,739.60/577,614.42 = 263,443.88/x
  3. Step 3: Cross multiply
    418,739.60x = 577,614.42 × 263,443.88
  4. Step 4: Simplify right side
    418,739.60x = 152,168,983,948.75
  5. Step 5: Solve for x
    x = 152,168,983,948.75/418,739.60
  6. Step 6: Final answer
    x = 363,397.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.