Home / 1,278,758.64-1,918,092.56-319,219.68

Finding the Fourth Proportional to 1,278,758.64, 1,918,092.56 and 319,219.68

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Solution

The fourth proportional to 1,278,758.64, 1,918,092.56 and 319,219.68 is: 478,818.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,758.64 : 1,918,092.56 = 319,219.68 : x
  2. Step 2: Convert to fraction form
    1,278,758.64/1,918,092.56 = 319,219.68/x
  3. Step 3: Cross multiply
    1,278,758.64x = 1,918,092.56 × 319,219.68
  4. Step 4: Simplify right side
    1,278,758.64x = 612,292,893,213.58
  5. Step 5: Solve for x
    x = 612,292,893,213.58/1,278,758.64
  6. Step 6: Final answer
    x = 478,818.19

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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.