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Finding the Fourth Proportional to 917,792.40, 1,375,813.80 and 715,276.20

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Solution

The fourth proportional to 917,792.40, 1,375,813.80 and 715,276.20 is: 1,072,232.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,792.40 : 1,375,813.80 = 715,276.20 : x
  2. Step 2: Convert to fraction form
    917,792.40/1,375,813.80 = 715,276.20/x
  3. Step 3: Cross multiply
    917,792.40x = 1,375,813.80 × 715,276.20
  4. Step 4: Simplify right side
    917,792.40x = 984,086,866,771.56
  5. Step 5: Solve for x
    x = 984,086,866,771.56/917,792.40
  6. Step 6: Final answer
    x = 1,072,232.53

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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.