Home / 1,098,436.50-1,515,865.41-621,508.50

Finding the Fourth Proportional to 1,098,436.50, 1,515,865.41 and 621,508.50

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Solution

The fourth proportional to 1,098,436.50, 1,515,865.41 and 621,508.50 is: 857,694.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098,436.50 : 1,515,865.41 = 621,508.50 : x
  2. Step 2: Convert to fraction form
    1,098,436.50/1,515,865.41 = 621,508.50/x
  3. Step 3: Cross multiply
    1,098,436.50x = 1,515,865.41 × 621,508.50
  4. Step 4: Simplify right side
    1,098,436.50x = 942,123,237,170.99
  5. Step 5: Solve for x
    x = 942,123,237,170.99/1,098,436.50
  6. Step 6: Final answer
    x = 857,694.77

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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.