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Finding the Fourth Proportional to 706,729.70, 1,057,502.55 and 520,105.70

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Solution

The fourth proportional to 706,729.70, 1,057,502.55 and 520,105.70 is: 778,251.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,729.70 : 1,057,502.55 = 520,105.70 : x
  2. Step 2: Convert to fraction form
    706,729.70/1,057,502.55 = 520,105.70/x
  3. Step 3: Cross multiply
    706,729.70x = 1,057,502.55 × 520,105.70
  4. Step 4: Simplify right side
    706,729.70x = 550,013,104,019.54
  5. Step 5: Solve for x
    x = 550,013,104,019.54/706,729.70
  6. Step 6: Final answer
    x = 778,251.01

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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.