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Finding the Fourth Proportional to 908,701.20, 1,363,051.80 and 902,480.40

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Solution

The fourth proportional to 908,701.20, 1,363,051.80 and 902,480.40 is: 1,353,720.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,701.20 : 1,363,051.80 = 902,480.40 : x
  2. Step 2: Convert to fraction form
    908,701.20/1,363,051.80 = 902,480.40/x
  3. Step 3: Cross multiply
    908,701.20x = 1,363,051.80 × 902,480.40
  4. Step 4: Simplify right side
    908,701.20x = 1,230,127,533,684.72
  5. Step 5: Solve for x
    x = 1,230,127,533,684.72/908,701.20
  6. Step 6: Final answer
    x = 1,353,720.60

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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.