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Finding the Fourth Proportional to 633,424.23, 874,139.65 and 361,486.71

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Solution

The fourth proportional to 633,424.23, 874,139.65 and 361,486.71 is: 498,859.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,424.23 : 874,139.65 = 361,486.71 : x
  2. Step 2: Convert to fraction form
    633,424.23/874,139.65 = 361,486.71/x
  3. Step 3: Cross multiply
    633,424.23x = 874,139.65 × 361,486.71
  4. Step 4: Simplify right side
    633,424.23x = 315,989,865,255.34
  5. Step 5: Solve for x
    x = 315,989,865,255.34/633,424.23
  6. Step 6: Final answer
    x = 498,859.77

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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.