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Finding the Fourth Proportional to 551,861.79, 829,385.97 and 513,548.57

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Solution

The fourth proportional to 551,861.79, 829,385.97 and 513,548.57 is: 771,805.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,861.79 : 829,385.97 = 513,548.57 : x
  2. Step 2: Convert to fraction form
    551,861.79/829,385.97 = 513,548.57/x
  3. Step 3: Cross multiply
    551,861.79x = 829,385.97 × 513,548.57
  4. Step 4: Simplify right side
    551,861.79x = 425,929,982,870.84
  5. Step 5: Solve for x
    x = 425,929,982,870.84/551,861.79
  6. Step 6: Final answer
    x = 771,805.53

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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.