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Finding the Fourth Proportional to 918,499, 1,377,767.50 and 334,238.64

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Solution

The fourth proportional to 918,499, 1,377,767.50 and 334,238.64 is: 501,364.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,499 : 1,377,767.50 = 334,238.64 : x
  2. Step 2: Convert to fraction form
    918,499/1,377,767.50 = 334,238.64/x
  3. Step 3: Cross multiply
    918,499x = 1,377,767.50 × 334,238.64
  4. Step 4: Simplify right side
    918,499x = 460,503,135,436.20
  5. Step 5: Solve for x
    x = 460,503,135,436.20/918,499
  6. Step 6: Final answer
    x = 501,364.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.