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Finding the Fourth Proportional to 735,576.80, 1,103,365.20 and 436,978.40

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Solution

The fourth proportional to 735,576.80, 1,103,365.20 and 436,978.40 is: 655,467.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    735,576.80 : 1,103,365.20 = 436,978.40 : x
  2. Step 2: Convert to fraction form
    735,576.80/1,103,365.20 = 436,978.40/x
  3. Step 3: Cross multiply
    735,576.80x = 1,103,365.20 × 436,978.40
  4. Step 4: Simplify right side
    735,576.80x = 482,146,759,711.68
  5. Step 5: Solve for x
    x = 482,146,759,711.68/735,576.80
  6. Step 6: Final answer
    x = 655,467.60

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Double scale
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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.