Home / 778,451.04-1,074,261.96-420,755.04

Finding the Fourth Proportional to 778,451.04, 1,074,261.96 and 420,755.04

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Solution

The fourth proportional to 778,451.04, 1,074,261.96 and 420,755.04 is: 580,641.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,451.04 : 1,074,261.96 = 420,755.04 : x
  2. Step 2: Convert to fraction form
    778,451.04/1,074,261.96 = 420,755.04/x
  3. Step 3: Cross multiply
    778,451.04x = 1,074,261.96 × 420,755.04
  4. Step 4: Simplify right side
    778,451.04x = 452,001,133,950.28
  5. Step 5: Solve for x
    x = 452,001,133,950.28/778,451.04
  6. Step 6: Final answer
    x = 580,641.70

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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.