Home / 778,819.96-1,074,821.70-439,280.92

Finding the Fourth Proportional to 778,819.96, 1,074,821.70 and 439,280.92

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Solution

The fourth proportional to 778,819.96, 1,074,821.70 and 439,280.92 is: 606,235.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,819.96 : 1,074,821.70 = 439,280.92 : x
  2. Step 2: Convert to fraction form
    778,819.96/1,074,821.70 = 439,280.92/x
  3. Step 3: Cross multiply
    778,819.96x = 1,074,821.70 × 439,280.92
  4. Step 4: Simplify right side
    778,819.96x = 472,148,665,211.96
  5. Step 5: Solve for x
    x = 472,148,665,211.96/778,819.96
  6. Step 6: Final answer
    x = 606,235.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.