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Finding the Fourth Proportional to 891,892.80, 1,230,805.80 and 483,984.24

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Solution

The fourth proportional to 891,892.80, 1,230,805.80 and 483,984.24 is: 667,894.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,892.80 : 1,230,805.80 = 483,984.24 : x
  2. Step 2: Convert to fraction form
    891,892.80/1,230,805.80 = 483,984.24/x
  3. Step 3: Cross multiply
    891,892.80x = 1,230,805.80 × 483,984.24
  4. Step 4: Simplify right side
    891,892.80x = 595,690,609,700.59
  5. Step 5: Solve for x
    x = 595,690,609,700.59/891,892.80
  6. Step 6: Final answer
    x = 667,894.85

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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.