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Finding the Fourth Proportional to 633,665.76, 874,425.31 and 361,722.84

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Solution

The fourth proportional to 633,665.76, 874,425.31 and 361,722.84 is: 499,158.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,665.76 : 874,425.31 = 361,722.84 : x
  2. Step 2: Convert to fraction form
    633,665.76/874,425.31 = 361,722.84/x
  3. Step 3: Cross multiply
    633,665.76x = 874,425.31 × 361,722.84
  4. Step 4: Simplify right side
    633,665.76x = 316,299,606,501.08
  5. Step 5: Solve for x
    x = 316,299,606,501.08/633,665.76
  6. Step 6: Final answer
    x = 499,158.43

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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.