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Finding the Fourth Proportional to 649,215.78, 895,964.13 and 358,821.14

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Solution

The fourth proportional to 649,215.78, 895,964.13 and 358,821.14 is: 495,198.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,215.78 : 895,964.13 = 358,821.14 : x
  2. Step 2: Convert to fraction form
    649,215.78/895,964.13 = 358,821.14/x
  3. Step 3: Cross multiply
    649,215.78x = 895,964.13 × 358,821.14
  4. Step 4: Simplify right side
    649,215.78x = 321,490,866,045.89
  5. Step 5: Solve for x
    x = 321,490,866,045.89/649,215.78
  6. Step 6: Final answer
    x = 495,198.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.