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Finding the Fourth Proportional to 566,136.66, 781,280.49 and 311,488.32

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Solution

The fourth proportional to 566,136.66, 781,280.49 and 311,488.32 is: 429,860.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,136.66 : 781,280.49 = 311,488.32 : x
  2. Step 2: Convert to fraction form
    566,136.66/781,280.49 = 311,488.32/x
  3. Step 3: Cross multiply
    566,136.66x = 781,280.49 × 311,488.32
  4. Step 4: Simplify right side
    566,136.66x = 243,359,747,278.88
  5. Step 5: Solve for x
    x = 243,359,747,278.88/566,136.66
  6. Step 6: Final answer
    x = 429,860.43

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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.