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Finding the Fourth Proportional to 664,226.48, 916,652.76 and 377,787.80

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Solution

The fourth proportional to 664,226.48, 916,652.76 and 377,787.80 is: 521,358.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,226.48 : 916,652.76 = 377,787.80 : x
  2. Step 2: Convert to fraction form
    664,226.48/916,652.76 = 377,787.80/x
  3. Step 3: Cross multiply
    664,226.48x = 916,652.76 × 377,787.80
  4. Step 4: Simplify right side
    664,226.48x = 346,300,229,564.33
  5. Step 5: Solve for x
    x = 346,300,229,564.33/664,226.48
  6. Step 6: Final answer
    x = 521,358.66

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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.