Home / 778,158.96-1,073,942.04-456,139.68

Finding the Fourth Proportional to 778,158.96, 1,073,942.04 and 456,139.68

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Solution

The fourth proportional to 778,158.96, 1,073,942.04 and 456,139.68 is: 629,521.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,158.96 : 1,073,942.04 = 456,139.68 : x
  2. Step 2: Convert to fraction form
    778,158.96/1,073,942.04 = 456,139.68/x
  3. Step 3: Cross multiply
    778,158.96x = 1,073,942.04 × 456,139.68
  4. Step 4: Simplify right side
    778,158.96x = 489,867,578,464.15
  5. Step 5: Solve for x
    x = 489,867,578,464.15/778,158.96
  6. Step 6: Final answer
    x = 629,521.22

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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.