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Finding the Fourth Proportional to 633,636, 874,202.40 and 361,508.40

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Solution

The fourth proportional to 633,636, 874,202.40 and 361,508.40 is: 498,758.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,636 : 874,202.40 = 361,508.40 : x
  2. Step 2: Convert to fraction form
    633,636/874,202.40 = 361,508.40/x
  3. Step 3: Cross multiply
    633,636x = 874,202.40 × 361,508.40
  4. Step 4: Simplify right side
    633,636x = 316,031,510,900.16
  5. Step 5: Solve for x
    x = 316,031,510,900.16/633,636
  6. Step 6: Final answer
    x = 498,758.77

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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.