Home / 1,278,434.37-1,917,153.08-479,280.33

Finding the Fourth Proportional to 1,278,434.37, 1,917,153.08 and 479,280.33

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Solution

The fourth proportional to 1,278,434.37, 1,917,153.08 and 479,280.33 is: 718,733.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,434.37 : 1,917,153.08 = 479,280.33 : x
  2. Step 2: Convert to fraction form
    1,278,434.37/1,917,153.08 = 479,280.33/x
  3. Step 3: Cross multiply
    1,278,434.37x = 1,917,153.08 × 479,280.33
  4. Step 4: Simplify right side
    1,278,434.37x = 918,853,758,446.52
  5. Step 5: Solve for x
    x = 918,853,758,446.52/1,278,434.37
  6. Step 6: Final answer
    x = 718,733.62

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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.