Home / 778,135.13-1,073,909.04-456,115.79

Finding the Fourth Proportional to 778,135.13, 1,073,909.04 and 456,115.79

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Solution

The fourth proportional to 778,135.13, 1,073,909.04 and 456,115.79 is: 629,488.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,135.13 : 1,073,909.04 = 456,115.79 : x
  2. Step 2: Convert to fraction form
    778,135.13/1,073,909.04 = 456,115.79/x
  3. Step 3: Cross multiply
    778,135.13x = 1,073,909.04 × 456,115.79
  4. Step 4: Simplify right side
    778,135.13x = 489,826,870,167.74
  5. Step 5: Solve for x
    x = 489,826,870,167.74/778,135.13
  6. Step 6: Final answer
    x = 629,488.18

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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.