Home / 688,002.40-1,029,962.40-511,292.80

Finding the Fourth Proportional to 688,002.40, 1,029,962.40 and 511,292.80

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Solution

The fourth proportional to 688,002.40, 1,029,962.40 and 511,292.80 is: 765,422.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,002.40 : 1,029,962.40 = 511,292.80 : x
  2. Step 2: Convert to fraction form
    688,002.40/1,029,962.40 = 511,292.80/x
  3. Step 3: Cross multiply
    688,002.40x = 1,029,962.40 × 511,292.80
  4. Step 4: Simplify right side
    688,002.40x = 526,612,359,390.72
  5. Step 5: Solve for x
    x = 526,612,359,390.72/688,002.40
  6. Step 6: Final answer
    x = 765,422.27

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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.