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Finding the Fourth Proportional to 442,852.70, 664,279.05 and 438,916.10

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Solution

The fourth proportional to 442,852.70, 664,279.05 and 438,916.10 is: 658,374.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,852.70 : 664,279.05 = 438,916.10 : x
  2. Step 2: Convert to fraction form
    442,852.70/664,279.05 = 438,916.10/x
  3. Step 3: Cross multiply
    442,852.70x = 664,279.05 × 438,916.10
  4. Step 4: Simplify right side
    442,852.70x = 291,562,769,937.71
  5. Step 5: Solve for x
    x = 291,562,769,937.71/442,852.70
  6. Step 6: Final answer
    x = 658,374.15

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.