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Finding the Fourth Proportional to 869,105.80, 1,303,658.70 and 752,465.80

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Solution

The fourth proportional to 869,105.80, 1,303,658.70 and 752,465.80 is: 1,128,698.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,105.80 : 1,303,658.70 = 752,465.80 : x
  2. Step 2: Convert to fraction form
    869,105.80/1,303,658.70 = 752,465.80/x
  3. Step 3: Cross multiply
    869,105.80x = 1,303,658.70 × 752,465.80
  4. Step 4: Simplify right side
    869,105.80x = 980,958,586,622.46
  5. Step 5: Solve for x
    x = 980,958,586,622.46/869,105.80
  6. Step 6: Final answer
    x = 1,128,698.70

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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.