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Finding the Fourth Proportional to 644,204.76, 888,972.78 and 357,743.16

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Solution

The fourth proportional to 644,204.76, 888,972.78 and 357,743.16 is: 493,669.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,204.76 : 888,972.78 = 357,743.16 : x
  2. Step 2: Convert to fraction form
    644,204.76/888,972.78 = 357,743.16/x
  3. Step 3: Cross multiply
    644,204.76x = 888,972.78 × 357,743.16
  4. Step 4: Simplify right side
    644,204.76x = 318,023,931,471.19
  5. Step 5: Solve for x
    x = 318,023,931,471.19/644,204.76
  6. Step 6: Final answer
    x = 493,669.02

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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.