Home / 1,279,522.05-1,918,641.02-426,293.57

Finding the Fourth Proportional to 1,279,522.05, 1,918,641.02 and 426,293.57

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Solution

The fourth proportional to 1,279,522.05, 1,918,641.02 and 426,293.57 is: 639,226.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,522.05 : 1,918,641.02 = 426,293.57 : x
  2. Step 2: Convert to fraction form
    1,279,522.05/1,918,641.02 = 426,293.57/x
  3. Step 3: Cross multiply
    1,279,522.05x = 1,918,641.02 × 426,293.57
  4. Step 4: Simplify right side
    1,279,522.05x = 817,904,318,239.57
  5. Step 5: Solve for x
    x = 817,904,318,239.57/1,279,522.05
  6. Step 6: Final answer
    x = 639,226.43

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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.