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Finding the Fourth Proportional to 511,243.20, 766,864.80 and 476,251.20

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Solution

The fourth proportional to 511,243.20, 766,864.80 and 476,251.20 is: 714,376.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,243.20 : 766,864.80 = 476,251.20 : x
  2. Step 2: Convert to fraction form
    511,243.20/766,864.80 = 476,251.20/x
  3. Step 3: Cross multiply
    511,243.20x = 766,864.80 × 476,251.20
  4. Step 4: Simplify right side
    511,243.20x = 365,220,281,237.76
  5. Step 5: Solve for x
    x = 365,220,281,237.76/511,243.20
  6. Step 6: Final answer
    x = 714,376.80

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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.