Home / 1,279,115.42-1,918,031.31-425,886.53

Finding the Fourth Proportional to 1,279,115.42, 1,918,031.31 and 425,886.53

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Solution

The fourth proportional to 1,279,115.42, 1,918,031.31 and 425,886.53 is: 638,616.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,115.42 : 1,918,031.31 = 425,886.53 : x
  2. Step 2: Convert to fraction form
    1,279,115.42/1,918,031.31 = 425,886.53/x
  3. Step 3: Cross multiply
    1,279,115.42x = 1,918,031.31 × 425,886.53
  4. Step 4: Simplify right side
    1,279,115.42x = 816,863,699,047.25
  5. Step 5: Solve for x
    x = 816,863,699,047.25/1,279,115.42
  6. Step 6: Final answer
    x = 638,616.10

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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.