Home / 822,520.95-1,135,081.94-478,439.43

Finding the Fourth Proportional to 822,520.95, 1,135,081.94 and 478,439.43

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Solution

The fourth proportional to 822,520.95, 1,135,081.94 and 478,439.43 is: 660,248.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    822,520.95 : 1,135,081.94 = 478,439.43 : x
  2. Step 2: Convert to fraction form
    822,520.95/1,135,081.94 = 478,439.43/x
  3. Step 3: Cross multiply
    822,520.95x = 1,135,081.94 × 478,439.43
  4. Step 4: Simplify right side
    822,520.95x = 543,067,953,984.70
  5. Step 5: Solve for x
    x = 543,067,953,984.70/822,520.95
  6. Step 6: Final answer
    x = 660,248.17

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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.