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Finding the Fourth Proportional to 553,444.92, 763,755.12 and 323,960.76

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Solution

The fourth proportional to 553,444.92, 763,755.12 and 323,960.76 is: 447,066.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,444.92 : 763,755.12 = 323,960.76 : x
  2. Step 2: Convert to fraction form
    553,444.92/763,755.12 = 323,960.76/x
  3. Step 3: Cross multiply
    553,444.92x = 763,755.12 × 323,960.76
  4. Step 4: Simplify right side
    553,444.92x = 247,426,689,129.09
  5. Step 5: Solve for x
    x = 247,426,689,129.09/553,444.92
  6. Step 6: Final answer
    x = 447,066.51

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Double scale
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Similar ratio
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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.