Home / 822,845.39-1,135,069.40-478,642.57

Finding the Fourth Proportional to 822,845.39, 1,135,069.40 and 478,642.57

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Solution

The fourth proportional to 822,845.39, 1,135,069.40 and 478,642.57 is: 660,260.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    822,845.39 : 1,135,069.40 = 478,642.57 : x
  2. Step 2: Convert to fraction form
    822,845.39/1,135,069.40 = 478,642.57/x
  3. Step 3: Cross multiply
    822,845.39x = 1,135,069.40 × 478,642.57
  4. Step 4: Simplify right side
    822,845.39x = 543,292,533,103.29
  5. Step 5: Solve for x
    x = 543,292,533,103.29/822,845.39
  6. Step 6: Final answer
    x = 660,260.78

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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.