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Finding the Fourth Proportional to 883,940.42, 1,219,805.42 and 540,351.78

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Solution

The fourth proportional to 883,940.42, 1,219,805.42 and 540,351.78 is: 745,665.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    883,940.42 : 1,219,805.42 = 540,351.78 : x
  2. Step 2: Convert to fraction form
    883,940.42/1,219,805.42 = 540,351.78/x
  3. Step 3: Cross multiply
    883,940.42x = 1,219,805.42 × 540,351.78
  4. Step 4: Simplify right side
    883,940.42x = 659,124,027,248.89
  5. Step 5: Solve for x
    x = 659,124,027,248.89/883,940.42
  6. Step 6: Final answer
    x = 745,665.68

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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.