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Finding the Fourth Proportional to 553,263.11, 763,557.84 and 323,806.71

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Solution

The fourth proportional to 553,263.11, 763,557.84 and 323,806.71 is: 446,885.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,263.11 : 763,557.84 = 323,806.71 : x
  2. Step 2: Convert to fraction form
    553,263.11/763,557.84 = 323,806.71/x
  3. Step 3: Cross multiply
    553,263.11x = 763,557.84 × 323,806.71
  4. Step 4: Simplify right side
    553,263.11x = 247,245,154,928.45
  5. Step 5: Solve for x
    x = 247,245,154,928.45/553,263.11
  6. Step 6: Final answer
    x = 446,885.31

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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.