Home / 1,279,214.76-1,918,471.86-480,434.52

Finding the Fourth Proportional to 1,279,214.76, 1,918,471.86 and 480,434.52

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Solution

The fourth proportional to 1,279,214.76, 1,918,471.86 and 480,434.52 is: 720,520.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,214.76 : 1,918,471.86 = 480,434.52 : x
  2. Step 2: Convert to fraction form
    1,279,214.76/1,918,471.86 = 480,434.52/x
  3. Step 3: Cross multiply
    1,279,214.76x = 1,918,471.86 × 480,434.52
  4. Step 4: Simplify right side
    1,279,214.76x = 921,700,107,192.61
  5. Step 5: Solve for x
    x = 921,700,107,192.61/1,279,214.76
  6. Step 6: Final answer
    x = 720,520.23

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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.