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Finding the Fourth Proportional to 865,902.80, 1,194,959.40 and 483,954.32

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Solution

The fourth proportional to 865,902.80, 1,194,959.40 and 483,954.32 is: 667,864.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,902.80 : 1,194,959.40 = 483,954.32 : x
  2. Step 2: Convert to fraction form
    865,902.80/1,194,959.40 = 483,954.32/x
  3. Step 3: Cross multiply
    865,902.80x = 1,194,959.40 × 483,954.32
  4. Step 4: Simplify right side
    865,902.80x = 578,305,763,854.61
  5. Step 5: Solve for x
    x = 578,305,763,854.61/865,902.80
  6. Step 6: Final answer
    x = 667,864.53

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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.