Home / 838,456.78-1,257,880.12-239,426.14

Finding the Fourth Proportional to 838,456.78, 1,257,880.12 and 239,426.14

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Solution

The fourth proportional to 838,456.78, 1,257,880.12 and 239,426.14 is: 359,194.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,456.78 : 1,257,880.12 = 239,426.14 : x
  2. Step 2: Convert to fraction form
    838,456.78/1,257,880.12 = 239,426.14/x
  3. Step 3: Cross multiply
    838,456.78x = 1,257,880.12 × 239,426.14
  4. Step 4: Simplify right side
    838,456.78x = 301,169,381,714.34
  5. Step 5: Solve for x
    x = 301,169,381,714.34/838,456.78
  6. Step 6: Final answer
    x = 359,194.88

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1.5x scale

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.