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Finding the Fourth Proportional to 975,843.60, 1,467,264.60 and 821,878.80

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Solution

The fourth proportional to 975,843.60, 1,467,264.60 and 821,878.80 is: 1,235,765.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    975,843.60 : 1,467,264.60 = 821,878.80 : x
  2. Step 2: Convert to fraction form
    975,843.60/1,467,264.60 = 821,878.80/x
  3. Step 3: Cross multiply
    975,843.60x = 1,467,264.60 × 821,878.80
  4. Step 4: Simplify right side
    975,843.60x = 1,205,913,668,730.48
  5. Step 5: Solve for x
    x = 1,205,913,668,730.48/975,843.60
  6. Step 6: Final answer
    x = 1,235,765.31

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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.