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Finding the Fourth Proportional to 651,676.80, 977,644.80 and 547,219.20

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Solution

The fourth proportional to 651,676.80, 977,644.80 and 547,219.20 is: 820,937.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,676.80 : 977,644.80 = 547,219.20 : x
  2. Step 2: Convert to fraction form
    651,676.80/977,644.80 = 547,219.20/x
  3. Step 3: Cross multiply
    651,676.80x = 977,644.80 × 547,219.20
  4. Step 4: Simplify right side
    651,676.80x = 534,986,005,340.16
  5. Step 5: Solve for x
    x = 534,986,005,340.16/651,676.80
  6. Step 6: Final answer
    x = 820,937.63

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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.