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Finding the Fourth Proportional to 611,807.80, 916,815.30 and 548,627.80

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Solution

The fourth proportional to 611,807.80, 916,815.30 and 548,627.80 is: 822,137.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,807.80 : 916,815.30 = 548,627.80 : x
  2. Step 2: Convert to fraction form
    611,807.80/916,815.30 = 548,627.80/x
  3. Step 3: Cross multiply
    611,807.80x = 916,815.30 × 548,627.80
  4. Step 4: Simplify right side
    611,807.80x = 502,990,361,045.34
  5. Step 5: Solve for x
    x = 502,990,361,045.34/611,807.80
  6. Step 6: Final answer
    x = 822,137.87

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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.