Home / 685,390.80-1,028,086.20-482,437.20

Finding the Fourth Proportional to 685,390.80, 1,028,086.20 and 482,437.20

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Solution

The fourth proportional to 685,390.80, 1,028,086.20 and 482,437.20 is: 723,655.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,390.80 : 1,028,086.20 = 482,437.20 : x
  2. Step 2: Convert to fraction form
    685,390.80/1,028,086.20 = 482,437.20/x
  3. Step 3: Cross multiply
    685,390.80x = 1,028,086.20 × 482,437.20
  4. Step 4: Simplify right side
    685,390.80x = 495,987,027,686.64
  5. Step 5: Solve for x
    x = 495,987,027,686.64/685,390.80
  6. Step 6: Final answer
    x = 723,655.80

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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.