Home / 457,719.60-686,579.40-417,169.20

Finding the Fourth Proportional to 457,719.60, 686,579.40 and 417,169.20

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Solution

The fourth proportional to 457,719.60, 686,579.40 and 417,169.20 is: 625,753.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,719.60 : 686,579.40 = 417,169.20 : x
  2. Step 2: Convert to fraction form
    457,719.60/686,579.40 = 417,169.20/x
  3. Step 3: Cross multiply
    457,719.60x = 686,579.40 × 417,169.20
  4. Step 4: Simplify right side
    457,719.60x = 286,419,779,034.48
  5. Step 5: Solve for x
    x = 286,419,779,034.48/457,719.60
  6. Step 6: Final answer
    x = 625,753.80

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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.