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Finding the Fourth Proportional to 485,660.98, 670,215.77 and 270,814.96

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Solution

The fourth proportional to 485,660.98, 670,215.77 and 270,814.96 is: 373,726.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,660.98 : 670,215.77 = 270,814.96 : x
  2. Step 2: Convert to fraction form
    485,660.98/670,215.77 = 270,814.96/x
  3. Step 3: Cross multiply
    485,660.98x = 670,215.77 × 270,814.96
  4. Step 4: Simplify right side
    485,660.98x = 181,504,456,943.92
  5. Step 5: Solve for x
    x = 181,504,456,943.92/485,660.98
  6. Step 6: Final answer
    x = 373,726.66

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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.