Home / 858,342.64-1,287,513.92-457,769.84

Finding the Fourth Proportional to 858,342.64, 1,287,513.92 and 457,769.84

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Solution

The fourth proportional to 858,342.64, 1,287,513.92 and 457,769.84 is: 686,654.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,342.64 : 1,287,513.92 = 457,769.84 : x
  2. Step 2: Convert to fraction form
    858,342.64/1,287,513.92 = 457,769.84/x
  3. Step 3: Cross multiply
    858,342.64x = 1,287,513.92 × 457,769.84
  4. Step 4: Simplify right side
    858,342.64x = 589,385,041,156.17
  5. Step 5: Solve for x
    x = 589,385,041,156.17/858,342.64
  6. Step 6: Final answer
    x = 686,654.74

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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.