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Finding the Fourth Proportional to 626,545.84, 864,610.09 and 340,059.78

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Solution

The fourth proportional to 626,545.84, 864,610.09 and 340,059.78 is: 469,269.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,545.84 : 864,610.09 = 340,059.78 : x
  2. Step 2: Convert to fraction form
    626,545.84/864,610.09 = 340,059.78/x
  3. Step 3: Cross multiply
    626,545.84x = 864,610.09 × 340,059.78
  4. Step 4: Simplify right side
    626,545.84x = 294,019,116,991.18
  5. Step 5: Solve for x
    x = 294,019,116,991.18/626,545.84
  6. Step 6: Final answer
    x = 469,269.92

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.