Home / 1,120,363.80-1,680,545.70-278,915.55

Finding the Fourth Proportional to 1,120,363.80, 1,680,545.70 and 278,915.55

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Solution

The fourth proportional to 1,120,363.80, 1,680,545.70 and 278,915.55 is: 418,373.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,363.80 : 1,680,545.70 = 278,915.55 : x
  2. Step 2: Convert to fraction form
    1,120,363.80/1,680,545.70 = 278,915.55/x
  3. Step 3: Cross multiply
    1,120,363.80x = 1,680,545.70 × 278,915.55
  4. Step 4: Simplify right side
    1,120,363.80x = 468,730,328,215.64
  5. Step 5: Solve for x
    x = 468,730,328,215.64/1,120,363.80
  6. Step 6: Final answer
    x = 418,373.33

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1.5x scale

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.