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Finding the Fourth Proportional to 542,014.71, 809,155.28 and 505,994.73

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Solution

The fourth proportional to 542,014.71, 809,155.28 and 505,994.73 is: 755,382.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,014.71 : 809,155.28 = 505,994.73 : x
  2. Step 2: Convert to fraction form
    542,014.71/809,155.28 = 505,994.73/x
  3. Step 3: Cross multiply
    542,014.71x = 809,155.28 × 505,994.73
  4. Step 4: Simplify right side
    542,014.71x = 409,428,304,901.70
  5. Step 5: Solve for x
    x = 409,428,304,901.70/542,014.71
  6. Step 6: Final answer
    x = 755,382.28

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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 (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.