Home / 858,454.94-1,287,384.96-431,825.87

Finding the Fourth Proportional to 858,454.94, 1,287,384.96 and 431,825.87

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Solution

The fourth proportional to 858,454.94, 1,287,384.96 and 431,825.87 is: 647,589.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,454.94 : 1,287,384.96 = 431,825.87 : x
  2. Step 2: Convert to fraction form
    858,454.94/1,287,384.96 = 431,825.87/x
  3. Step 3: Cross multiply
    858,454.94x = 1,287,384.96 × 431,825.87
  4. Step 4: Simplify right side
    858,454.94x = 555,926,130,376.92
  5. Step 5: Solve for x
    x = 555,926,130,376.92/858,454.94
  6. Step 6: Final answer
    x = 647,589.18

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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.