Home / 981,307.85-1,470,459.40-660,270.61

Finding the Fourth Proportional to 981,307.85, 1,470,459.40 and 660,270.61

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Solution

The fourth proportional to 981,307.85, 1,470,459.40 and 660,270.61 is: 989,395.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,307.85 : 1,470,459.40 = 660,270.61 : x
  2. Step 2: Convert to fraction form
    981,307.85/1,470,459.40 = 660,270.61/x
  3. Step 3: Cross multiply
    981,307.85x = 1,470,459.40 × 660,270.61
  4. Step 4: Simplify right side
    981,307.85x = 970,901,120,648.32
  5. Step 5: Solve for x
    x = 970,901,120,648.32/981,307.85
  6. Step 6: Final answer
    x = 989,395.04

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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.