Home / 891,143.73-1,229,856.12-488,813.49

Finding the Fourth Proportional to 891,143.73, 1,229,856.12 and 488,813.49

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Solution

The fourth proportional to 891,143.73, 1,229,856.12 and 488,813.49 is: 674,605.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,143.73 : 1,229,856.12 = 488,813.49 : x
  2. Step 2: Convert to fraction form
    891,143.73/1,229,856.12 = 488,813.49/x
  3. Step 3: Cross multiply
    891,143.73x = 1,229,856.12 × 488,813.49
  4. Step 4: Simplify right side
    891,143.73x = 601,170,262,215.06
  5. Step 5: Solve for x
    x = 601,170,262,215.06/891,143.73
  6. Step 6: Final answer
    x = 674,605.28

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Double scale
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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.