Home / 1,279,184.43-1,918,750.05-426,317.88

Finding the Fourth Proportional to 1,279,184.43, 1,918,750.05 and 426,317.88

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Solution

The fourth proportional to 1,279,184.43, 1,918,750.05 and 426,317.88 is: 639,467.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,184.43 : 1,918,750.05 = 426,317.88 : x
  2. Step 2: Convert to fraction form
    1,279,184.43/1,918,750.05 = 426,317.88/x
  3. Step 3: Cross multiply
    1,279,184.43x = 1,918,750.05 × 426,317.88
  4. Step 4: Simplify right side
    1,279,184.43x = 817,997,453,565.89
  5. Step 5: Solve for x
    x = 817,997,453,565.89/1,279,184.43
  6. Step 6: Final answer
    x = 639,467.96

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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.