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Finding the Fourth Proportional to 917,353.60, 1,373,265.60 and 817,820.80

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Solution

The fourth proportional to 917,353.60, 1,373,265.60 and 817,820.80 is: 1,224,266.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,353.60 : 1,373,265.60 = 817,820.80 : x
  2. Step 2: Convert to fraction form
    917,353.60/1,373,265.60 = 817,820.80/x
  3. Step 3: Cross multiply
    917,353.60x = 1,373,265.60 × 817,820.80
  4. Step 4: Simplify right side
    917,353.60x = 1,123,085,171,604.48
  5. Step 5: Solve for x
    x = 1,123,085,171,604.48/917,353.60
  6. Step 6: Final answer
    x = 1,224,266.38

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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.