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Finding the Fourth Proportional to 620,607.10, 930,910.65 and 408,030.70

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Solution

The fourth proportional to 620,607.10, 930,910.65 and 408,030.70 is: 612,046.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,607.10 : 930,910.65 = 408,030.70 : x
  2. Step 2: Convert to fraction form
    620,607.10/930,910.65 = 408,030.70/x
  3. Step 3: Cross multiply
    620,607.10x = 930,910.65 × 408,030.70
  4. Step 4: Simplify right side
    620,607.10x = 379,840,124,156.96
  5. Step 5: Solve for x
    x = 379,840,124,156.96/620,607.10
  6. Step 6: Final answer
    x = 612,046.05

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Similar ratio
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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.