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Finding the Fourth Proportional to 659,615.60, 910,837.66 and 415,008.20

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Solution

The fourth proportional to 659,615.60, 910,837.66 and 415,008.20 is: 573,068.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,615.60 : 910,837.66 = 415,008.20 : x
  2. Step 2: Convert to fraction form
    659,615.60/910,837.66 = 415,008.20/x
  3. Step 3: Cross multiply
    659,615.60x = 910,837.66 × 415,008.20
  4. Step 4: Simplify right side
    659,615.60x = 378,005,093,382.20
  5. Step 5: Solve for x
    x = 378,005,093,382.20/659,615.60
  6. Step 6: Final answer
    x = 573,068.76

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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.