Home / 1,120,307.76-1,680,453-278,853.84

Finding the Fourth Proportional to 1,120,307.76, 1,680,453 and 278,853.84

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Solution

The fourth proportional to 1,120,307.76, 1,680,453 and 278,853.84 is: 418,278.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,307.76 : 1,680,453 = 278,853.84 : x
  2. Step 2: Convert to fraction form
    1,120,307.76/1,680,453 = 278,853.84/x
  3. Step 3: Cross multiply
    1,120,307.76x = 1,680,453 × 278,853.84
  4. Step 4: Simplify right side
    1,120,307.76x = 468,600,771,989.52
  5. Step 5: Solve for x
    x = 468,600,771,989.52/1,120,307.76
  6. Step 6: Final answer
    x = 418,278.61

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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.