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Finding the Fourth Proportional to 553,374.32, 763,711.02 and 323,917.70

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Solution

The fourth proportional to 553,374.32, 763,711.02 and 323,917.70 is: 447,038.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,374.32 : 763,711.02 = 323,917.70 : x
  2. Step 2: Convert to fraction form
    553,374.32/763,711.02 = 323,917.70/x
  3. Step 3: Cross multiply
    553,374.32x = 763,711.02 × 323,917.70
  4. Step 4: Simplify right side
    553,374.32x = 247,379,513,244.50
  5. Step 5: Solve for x
    x = 247,379,513,244.50/553,374.32
  6. Step 6: Final answer
    x = 447,038.30

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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.