Home / 518,838.20-778,257.30-144,860.60

Finding the Fourth Proportional to 518,838.20, 778,257.30 and 144,860.60

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Solution

The fourth proportional to 518,838.20, 778,257.30 and 144,860.60 is: 217,290.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,838.20 : 778,257.30 = 144,860.60 : x
  2. Step 2: Convert to fraction form
    518,838.20/778,257.30 = 144,860.60/x
  3. Step 3: Cross multiply
    518,838.20x = 778,257.30 × 144,860.60
  4. Step 4: Simplify right side
    518,838.20x = 112,738,819,432.38
  5. Step 5: Solve for x
    x = 112,738,819,432.38/518,838.20
  6. Step 6: Final answer
    x = 217,290.90

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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.