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Finding the Fourth Proportional to 408,684.42, 563,275.89 and 385,064.82

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Solution

The fourth proportional to 408,684.42, 563,275.89 and 385,064.82 is: 530,721.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,684.42 : 563,275.89 = 385,064.82 : x
  2. Step 2: Convert to fraction form
    408,684.42/563,275.89 = 385,064.82/x
  3. Step 3: Cross multiply
    408,684.42x = 563,275.89 × 385,064.82
  4. Step 4: Simplify right side
    408,684.42x = 216,897,729,193.19
  5. Step 5: Solve for x
    x = 216,897,729,193.19/408,684.42
  6. Step 6: Final answer
    x = 530,721.80

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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.