Home / 457,629.65-686,437.12-142,086.86

Finding the Fourth Proportional to 457,629.65, 686,437.12 and 142,086.86

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Solution

The fourth proportional to 457,629.65, 686,437.12 and 142,086.86 is: 213,128.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,629.65 : 686,437.12 = 142,086.86 : x
  2. Step 2: Convert to fraction form
    457,629.65/686,437.12 = 142,086.86/x
  3. Step 3: Cross multiply
    457,629.65x = 686,437.12 × 142,086.86
  4. Step 4: Simplify right side
    457,629.65x = 97,533,694,257.81
  5. Step 5: Solve for x
    x = 97,533,694,257.81/457,629.65
  6. Step 6: Final answer
    x = 213,128.00

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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.