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Finding the Fourth Proportional to 735,404.40, 1,101,940.20 and 485,794.80

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Solution

The fourth proportional to 735,404.40, 1,101,940.20 and 485,794.80 is: 727,921.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    735,404.40 : 1,101,940.20 = 485,794.80 : x
  2. Step 2: Convert to fraction form
    735,404.40/1,101,940.20 = 485,794.80/x
  3. Step 3: Cross multiply
    735,404.40x = 1,101,940.20 × 485,794.80
  4. Step 4: Simplify right side
    735,404.40x = 535,316,819,070.96
  5. Step 5: Solve for x
    x = 535,316,819,070.96/735,404.40
  6. Step 6: Final answer
    x = 727,921.70

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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.