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Finding the Fourth Proportional to 644,490.60, 966,735.90 and 495,018.60

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Solution

The fourth proportional to 644,490.60, 966,735.90 and 495,018.60 is: 742,527.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,490.60 : 966,735.90 = 495,018.60 : x
  2. Step 2: Convert to fraction form
    644,490.60/966,735.90 = 495,018.60/x
  3. Step 3: Cross multiply
    644,490.60x = 966,735.90 × 495,018.60
  4. Step 4: Simplify right side
    644,490.60x = 478,552,251,787.74
  5. Step 5: Solve for x
    x = 478,552,251,787.74/644,490.60
  6. Step 6: Final answer
    x = 742,527.90

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Double scale
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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.