Home / 847,059.12-1,270,319.24-278,309.12

Finding the Fourth Proportional to 847,059.12, 1,270,319.24 and 278,309.12

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Solution

The fourth proportional to 847,059.12, 1,270,319.24 and 278,309.12 is: 417,375.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    847,059.12 : 1,270,319.24 = 278,309.12 : x
  2. Step 2: Convert to fraction form
    847,059.12/1,270,319.24 = 278,309.12/x
  3. Step 3: Cross multiply
    847,059.12x = 1,270,319.24 × 278,309.12
  4. Step 4: Simplify right side
    847,059.12x = 353,541,431,587.72
  5. Step 5: Solve for x
    x = 353,541,431,587.72/847,059.12
  6. Step 6: Final answer
    x = 417,375.16

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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.