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Finding the Fourth Proportional to 908,671.20, 1,363,006.80 and 902,450.40

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Solution

The fourth proportional to 908,671.20, 1,363,006.80 and 902,450.40 is: 1,353,675.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,671.20 : 1,363,006.80 = 902,450.40 : x
  2. Step 2: Convert to fraction form
    908,671.20/1,363,006.80 = 902,450.40/x
  3. Step 3: Cross multiply
    908,671.20x = 1,363,006.80 × 902,450.40
  4. Step 4: Simplify right side
    908,671.20x = 1,230,046,031,862.72
  5. Step 5: Solve for x
    x = 1,230,046,031,862.72/908,671.20
  6. Step 6: Final answer
    x = 1,353,675.60

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Similar ratio
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1.5x scale

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.