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Finding the Fourth Proportional to 891,059.70, 1,333,637.10 and 820,200.90

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Solution

The fourth proportional to 891,059.70, 1,333,637.10 and 820,200.90 is: 1,227,583.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,059.70 : 1,333,637.10 = 820,200.90 : x
  2. Step 2: Convert to fraction form
    891,059.70/1,333,637.10 = 820,200.90/x
  3. Step 3: Cross multiply
    891,059.70x = 1,333,637.10 × 820,200.90
  4. Step 4: Simplify right side
    891,059.70x = 1,093,850,349,693.39
  5. Step 5: Solve for x
    x = 1,093,850,349,693.39/891,059.70
  6. Step 6: Final answer
    x = 1,227,583.68

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1.5x scale

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.