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Finding the Fourth Proportional to 502,796.20, 693,661.20 and 287,820.52

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Solution

The fourth proportional to 502,796.20, 693,661.20 and 287,820.52 is: 397,079.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,796.20 : 693,661.20 = 287,820.52 : x
  2. Step 2: Convert to fraction form
    502,796.20/693,661.20 = 287,820.52/x
  3. Step 3: Cross multiply
    502,796.20x = 693,661.20 × 287,820.52
  4. Step 4: Simplify right side
    502,796.20x = 199,649,927,287.82
  5. Step 5: Solve for x
    x = 199,649,927,287.82/502,796.20
  6. Step 6: Final answer
    x = 397,079.23

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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.