Home / 1,207,387.80-1,811,081.70-647,515.80

Finding the Fourth Proportional to 1,207,387.80, 1,811,081.70 and 647,515.80

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Solution

The fourth proportional to 1,207,387.80, 1,811,081.70 and 647,515.80 is: 971,273.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,387.80 : 1,811,081.70 = 647,515.80 : x
  2. Step 2: Convert to fraction form
    1,207,387.80/1,811,081.70 = 647,515.80/x
  3. Step 3: Cross multiply
    1,207,387.80x = 1,811,081.70 × 647,515.80
  4. Step 4: Simplify right side
    1,207,387.80x = 1,172,704,015,840.86
  5. Step 5: Solve for x
    x = 1,172,704,015,840.86/1,207,387.80
  6. Step 6: Final answer
    x = 971,273.70

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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.