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Finding the Fourth Proportional to 480,880.14, 663,123.15 and 319,761.42

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Solution

The fourth proportional to 480,880.14, 663,123.15 and 319,761.42 is: 440,943.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,880.14 : 663,123.15 = 319,761.42 : x
  2. Step 2: Convert to fraction form
    480,880.14/663,123.15 = 319,761.42/x
  3. Step 3: Cross multiply
    480,880.14x = 663,123.15 × 319,761.42
  4. Step 4: Simplify right side
    480,880.14x = 212,041,200,078.87
  5. Step 5: Solve for x
    x = 212,041,200,078.87/480,880.14
  6. Step 6: Final answer
    x = 440,943.97

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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.