Home / 778,166.46-1,073,869.70-420,470.46

Finding the Fourth Proportional to 778,166.46, 1,073,869.70 and 420,470.46

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Solution

The fourth proportional to 778,166.46, 1,073,869.70 and 420,470.46 is: 580,249.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,166.46 : 1,073,869.70 = 420,470.46 : x
  2. Step 2: Convert to fraction form
    778,166.46/1,073,869.70 = 420,470.46/x
  3. Step 3: Cross multiply
    778,166.46x = 1,073,869.70 × 420,470.46
  4. Step 4: Simplify right side
    778,166.46x = 451,530,484,636.71
  5. Step 5: Solve for x
    x = 451,530,484,636.71/778,166.46
  6. Step 6: Final answer
    x = 580,249.22

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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.