Home / 668,130.88-1,002,042.96-398,335.36

Finding the Fourth Proportional to 668,130.88, 1,002,042.96 and 398,335.36

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Solution

The fourth proportional to 668,130.88, 1,002,042.96 and 398,335.36 is: 597,411.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,130.88 : 1,002,042.96 = 398,335.36 : x
  2. Step 2: Convert to fraction form
    668,130.88/1,002,042.96 = 398,335.36/x
  3. Step 3: Cross multiply
    668,130.88x = 1,002,042.96 × 398,335.36
  4. Step 4: Simplify right side
    668,130.88x = 399,149,143,207.07
  5. Step 5: Solve for x
    x = 399,149,143,207.07/668,130.88
  6. Step 6: Final answer
    x = 597,411.61

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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.