Home / 668,116.60-1,002,247.80-647,121.40

Finding the Fourth Proportional to 668,116.60, 1,002,247.80 and 647,121.40

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Solution

The fourth proportional to 668,116.60, 1,002,247.80 and 647,121.40 is: 970,752.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,116.60 : 1,002,247.80 = 647,121.40 : x
  2. Step 2: Convert to fraction form
    668,116.60/1,002,247.80 = 647,121.40/x
  3. Step 3: Cross multiply
    668,116.60x = 1,002,247.80 × 647,121.40
  4. Step 4: Simplify right side
    668,116.60x = 648,575,999,482.92
  5. Step 5: Solve for x
    x = 648,575,999,482.92/668,116.60
  6. Step 6: Final answer
    x = 970,752.71

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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.