Home / 1,125,314.40-1,687,706.64-326,385.12

Finding the Fourth Proportional to 1,125,314.40, 1,687,706.64 and 326,385.12

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Solution

The fourth proportional to 1,125,314.40, 1,687,706.64 and 326,385.12 is: 489,500.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125,314.40 : 1,687,706.64 = 326,385.12 : x
  2. Step 2: Convert to fraction form
    1,125,314.40/1,687,706.64 = 326,385.12/x
  3. Step 3: Cross multiply
    1,125,314.40x = 1,687,706.64 × 326,385.12
  4. Step 4: Simplify right side
    1,125,314.40x = 550,842,334,221.20
  5. Step 5: Solve for x
    x = 550,842,334,221.20/1,125,314.40
  6. Step 6: Final answer
    x = 489,500.83

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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.