Home / 769,021.20-1,061,279.52-442,333.68

Finding the Fourth Proportional to 769,021.20, 1,061,279.52 and 442,333.68

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Solution

The fourth proportional to 769,021.20, 1,061,279.52 and 442,333.68 is: 610,437.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,021.20 : 1,061,279.52 = 442,333.68 : x
  2. Step 2: Convert to fraction form
    769,021.20/1,061,279.52 = 442,333.68/x
  3. Step 3: Cross multiply
    769,021.20x = 1,061,279.52 × 442,333.68
  4. Step 4: Simplify right side
    769,021.20x = 469,439,675,590.23
  5. Step 5: Solve for x
    x = 469,439,675,590.23/769,021.20
  6. Step 6: Final answer
    x = 610,437.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.