Home / 838,438.86-1,257,678.96-305,959.86

Finding the Fourth Proportional to 838,438.86, 1,257,678.96 and 305,959.86

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Solution

The fourth proportional to 838,438.86, 1,257,678.96 and 305,959.86 is: 458,947.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,438.86 : 1,257,678.96 = 305,959.86 : x
  2. Step 2: Convert to fraction form
    838,438.86/1,257,678.96 = 305,959.86/x
  3. Step 3: Cross multiply
    838,438.86x = 1,257,678.96 × 305,959.86
  4. Step 4: Simplify right side
    838,438.86x = 384,799,278,526.55
  5. Step 5: Solve for x
    x = 384,799,278,526.55/838,438.86
  6. Step 6: Final answer
    x = 458,947.33

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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.