Home / 688,620.20-1,032,930.30-511,473.20

Finding the Fourth Proportional to 688,620.20, 1,032,930.30 and 511,473.20

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Solution

The fourth proportional to 688,620.20, 1,032,930.30 and 511,473.20 is: 767,209.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,620.20 : 1,032,930.30 = 511,473.20 : x
  2. Step 2: Convert to fraction form
    688,620.20/1,032,930.30 = 511,473.20/x
  3. Step 3: Cross multiply
    688,620.20x = 1,032,930.30 × 511,473.20
  4. Step 4: Simplify right side
    688,620.20x = 528,316,165,917.96
  5. Step 5: Solve for x
    x = 528,316,165,917.96/688,620.20
  6. Step 6: Final answer
    x = 767,209.80

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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.