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Finding the Fourth Proportional to 649,910.79, 896,888.70 and 363,424.73

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Solution

The fourth proportional to 649,910.79, 896,888.70 and 363,424.73 is: 501,532.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,910.79 : 896,888.70 = 363,424.73 : x
  2. Step 2: Convert to fraction form
    649,910.79/896,888.70 = 363,424.73/x
  3. Step 3: Cross multiply
    649,910.79x = 896,888.70 × 363,424.73
  4. Step 4: Simplify right side
    649,910.79x = 325,951,529,153.11
  5. Step 5: Solve for x
    x = 325,951,529,153.11/649,910.79
  6. Step 6: Final answer
    x = 501,532.72

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Double scale
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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.