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Finding the Fourth Proportional to 644,093.32, 888,876.56 and 357,613.40

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Solution

The fourth proportional to 644,093.32, 888,876.56 and 357,613.40 is: 493,521.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,093.32 : 888,876.56 = 357,613.40 : x
  2. Step 2: Convert to fraction form
    644,093.32/888,876.56 = 357,613.40/x
  3. Step 3: Cross multiply
    644,093.32x = 888,876.56 × 357,613.40
  4. Step 4: Simplify right side
    644,093.32x = 317,874,168,801.90
  5. Step 5: Solve for x
    x = 317,874,168,801.90/644,093.32
  6. Step 6: Final answer
    x = 493,521.92

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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.