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Finding the Fourth Proportional to 886,420.80, 1,244,138.40 and 886,420.80

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Solution

The fourth proportional to 886,420.80, 1,244,138.40 and 886,420.80 is: 1,244,138.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,420.80 : 1,244,138.40 = 886,420.80 : x
  2. Step 2: Convert to fraction form
    886,420.80/1,244,138.40 = 886,420.80/x
  3. Step 3: Cross multiply
    886,420.80x = 1,244,138.40 × 886,420.80
  4. Step 4: Simplify right side
    886,420.80x = 1,102,830,155,838.72
  5. Step 5: Solve for x
    x = 1,102,830,155,838.72/886,420.80
  6. Step 6: Final answer
    x = 1,244,138.40

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.