Home / 668,490.68-1,002,237.32-402,188.80

Finding the Fourth Proportional to 668,490.68, 1,002,237.32 and 402,188.80

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Solution

The fourth proportional to 668,490.68, 1,002,237.32 and 402,188.80 is: 602,983.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,490.68 : 1,002,237.32 = 402,188.80 : x
  2. Step 2: Convert to fraction form
    668,490.68/1,002,237.32 = 402,188.80/x
  3. Step 3: Cross multiply
    668,490.68x = 1,002,237.32 × 402,188.80
  4. Step 4: Simplify right side
    668,490.68x = 403,088,625,046.02
  5. Step 5: Solve for x
    x = 403,088,625,046.02/668,490.68
  6. Step 6: Final answer
    x = 602,983.16

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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.