Home / 858,338.64-1,287,507.92-457,765.84

Finding the Fourth Proportional to 858,338.64, 1,287,507.92 and 457,765.84

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Solution

The fourth proportional to 858,338.64, 1,287,507.92 and 457,765.84 is: 686,648.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,338.64 : 1,287,507.92 = 457,765.84 : x
  2. Step 2: Convert to fraction form
    858,338.64/1,287,507.92 = 457,765.84/x
  3. Step 3: Cross multiply
    858,338.64x = 1,287,507.92 × 457,765.84
  4. Step 4: Simplify right side
    858,338.64x = 589,377,144,505.45
  5. Step 5: Solve for x
    x = 589,377,144,505.45/858,338.64
  6. Step 6: Final answer
    x = 686,648.74

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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.