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Finding the Fourth Proportional to 891,957.42, 1,338,311.43 and 555,279.84

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Solution

The fourth proportional to 891,957.42, 1,338,311.43 and 555,279.84 is: 833,153.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,957.42 : 1,338,311.43 = 555,279.84 : x
  2. Step 2: Convert to fraction form
    891,957.42/1,338,311.43 = 555,279.84/x
  3. Step 3: Cross multiply
    891,957.42x = 1,338,311.43 × 555,279.84
  4. Step 4: Simplify right side
    891,957.42x = 743,137,356,720.57
  5. Step 5: Solve for x
    x = 743,137,356,720.57/891,957.42
  6. Step 6: Final answer
    x = 833,153.40

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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.