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Finding the Fourth Proportional to 917,549.19, 1,376,892.09 and 533,478.78

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Solution

The fourth proportional to 917,549.19, 1,376,892.09 and 533,478.78 is: 800,548.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,549.19 : 1,376,892.09 = 533,478.78 : x
  2. Step 2: Convert to fraction form
    917,549.19/1,376,892.09 = 533,478.78/x
  3. Step 3: Cross multiply
    917,549.19x = 1,376,892.09 × 533,478.78
  4. Step 4: Simplify right side
    917,549.19x = 734,542,712,364.85
  5. Step 5: Solve for x
    x = 734,542,712,364.85/917,549.19
  6. Step 6: Final answer
    x = 800,548.59

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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.