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Finding the Fourth Proportional to 891,155.88, 1,230,272.82 and 688,256.82

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Solution

The fourth proportional to 891,155.88, 1,230,272.82 and 688,256.82 is: 950,163.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,155.88 : 1,230,272.82 = 688,256.82 : x
  2. Step 2: Convert to fraction form
    891,155.88/1,230,272.82 = 688,256.82/x
  3. Step 3: Cross multiply
    891,155.88x = 1,230,272.82 × 688,256.82
  4. Step 4: Simplify right side
    891,155.88x = 846,743,658,825.63
  5. Step 5: Solve for x
    x = 846,743,658,825.63/891,155.88
  6. Step 6: Final answer
    x = 950,163.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.