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Finding the Fourth Proportional to 553,436.09, 763,796.13 and 323,979.46

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Solution

The fourth proportional to 553,436.09, 763,796.13 and 323,979.46 is: 447,123.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,436.09 : 763,796.13 = 323,979.46 : x
  2. Step 2: Convert to fraction form
    553,436.09/763,796.13 = 323,979.46/x
  3. Step 3: Cross multiply
    553,436.09x = 763,796.13 × 323,979.46
  4. Step 4: Simplify right side
    553,436.09x = 247,454,260,741.81
  5. Step 5: Solve for x
    x = 247,454,260,741.81/553,436.09
  6. Step 6: Final answer
    x = 447,123.46

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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.