Home / 838,636.08-1,257,965.05-239,616.78

Finding the Fourth Proportional to 838,636.08, 1,257,965.05 and 239,616.78

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Solution

The fourth proportional to 838,636.08, 1,257,965.05 and 239,616.78 is: 359,428.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,636.08 : 1,257,965.05 = 239,616.78 : x
  2. Step 2: Convert to fraction form
    838,636.08/1,257,965.05 = 239,616.78/x
  3. Step 3: Cross multiply
    838,636.08x = 1,257,965.05 × 239,616.78
  4. Step 4: Simplify right side
    838,636.08x = 301,429,534,633.54
  5. Step 5: Solve for x
    x = 301,429,534,633.54/838,636.08
  6. Step 6: Final answer
    x = 359,428.29

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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.