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Finding the Fourth Proportional to 706,751.20, 1,057,534.80 and 520,127.20

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Solution

The fourth proportional to 706,751.20, 1,057,534.80 and 520,127.20 is: 778,283.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,751.20 : 1,057,534.80 = 520,127.20 : x
  2. Step 2: Convert to fraction form
    706,751.20/1,057,534.80 = 520,127.20/x
  3. Step 3: Cross multiply
    706,751.20x = 1,057,534.80 × 520,127.20
  4. Step 4: Simplify right side
    706,751.20x = 550,052,614,426.56
  5. Step 5: Solve for x
    x = 550,052,614,426.56/706,751.20
  6. Step 6: Final answer
    x = 778,283.24

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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.