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Finding the Fourth Proportional to 661,643.20, 992,464.80 and 600,625.90

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Solution

The fourth proportional to 661,643.20, 992,464.80 and 600,625.90 is: 900,938.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,643.20 : 992,464.80 = 600,625.90 : x
  2. Step 2: Convert to fraction form
    661,643.20/992,464.80 = 600,625.90/x
  3. Step 3: Cross multiply
    661,643.20x = 992,464.80 × 600,625.90
  4. Step 4: Simplify right side
    661,643.20x = 596,100,063,718.32
  5. Step 5: Solve for x
    x = 596,100,063,718.32/661,643.20
  6. Step 6: Final answer
    x = 900,938.85

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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.