Home / 688,209.45-1,032,078.87-261,642.39

Finding the Fourth Proportional to 688,209.45, 1,032,078.87 and 261,642.39

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Solution

The fourth proportional to 688,209.45, 1,032,078.87 and 261,642.39 is: 392,374.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,209.45 : 1,032,078.87 = 261,642.39 : x
  2. Step 2: Convert to fraction form
    688,209.45/1,032,078.87 = 261,642.39/x
  3. Step 3: Cross multiply
    688,209.45x = 1,032,078.87 × 261,642.39
  4. Step 4: Simplify right side
    688,209.45x = 270,035,582,215.30
  5. Step 5: Solve for x
    x = 270,035,582,215.30/688,209.45
  6. Step 6: Final answer
    x = 392,374.13

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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.