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Finding the Fourth Proportional to 511,812.80, 767,719.20 and 471,377.60

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Solution

The fourth proportional to 511,812.80, 767,719.20 and 471,377.60 is: 707,066.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,812.80 : 767,719.20 = 471,377.60 : x
  2. Step 2: Convert to fraction form
    511,812.80/767,719.20 = 471,377.60/x
  3. Step 3: Cross multiply
    511,812.80x = 767,719.20 × 471,377.60
  4. Step 4: Simplify right side
    511,812.80x = 361,885,633,969.92
  5. Step 5: Solve for x
    x = 361,885,633,969.92/511,812.80
  6. Step 6: Final answer
    x = 707,066.40

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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.