Home / 1,098,539.40-1,647,809.10-388,590.60

Finding the Fourth Proportional to 1,098,539.40, 1,647,809.10 and 388,590.60

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Solution

The fourth proportional to 1,098,539.40, 1,647,809.10 and 388,590.60 is: 582,885.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098,539.40 : 1,647,809.10 = 388,590.60 : x
  2. Step 2: Convert to fraction form
    1,098,539.40/1,647,809.10 = 388,590.60/x
  3. Step 3: Cross multiply
    1,098,539.40x = 1,647,809.10 × 388,590.60
  4. Step 4: Simplify right side
    1,098,539.40x = 640,323,126,854.46
  5. Step 5: Solve for x
    x = 640,323,126,854.46/1,098,539.40
  6. Step 6: Final answer
    x = 582,885.90

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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.