Home / 1,279,213.76-1,918,470.36-480,433.52

Finding the Fourth Proportional to 1,279,213.76, 1,918,470.36 and 480,433.52

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Solution

The fourth proportional to 1,279,213.76, 1,918,470.36 and 480,433.52 is: 720,518.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,213.76 : 1,918,470.36 = 480,433.52 : x
  2. Step 2: Convert to fraction form
    1,279,213.76/1,918,470.36 = 480,433.52/x
  3. Step 3: Cross multiply
    1,279,213.76x = 1,918,470.36 × 480,433.52
  4. Step 4: Simplify right side
    1,279,213.76x = 921,697,468,070.47
  5. Step 5: Solve for x
    x = 921,697,468,070.47/1,279,213.76
  6. Step 6: Final answer
    x = 720,518.73

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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.