Home / 862,124.31-1,189,732.86-499,617.72

Finding the Fourth Proportional to 862,124.31, 1,189,732.86 and 499,617.72

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Solution

The fourth proportional to 862,124.31, 1,189,732.86 and 499,617.72 is: 689,473.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,124.31 : 1,189,732.86 = 499,617.72 : x
  2. Step 2: Convert to fraction form
    862,124.31/1,189,732.86 = 499,617.72/x
  3. Step 3: Cross multiply
    862,124.31x = 1,189,732.86 × 499,617.72
  4. Step 4: Simplify right side
    862,124.31x = 594,411,618,922.28
  5. Step 5: Solve for x
    x = 594,411,618,922.28/862,124.31
  6. Step 6: Final answer
    x = 689,473.21

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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.