Home / 885,724.92-1,221,754.86-631,158.36

Finding the Fourth Proportional to 885,724.92, 1,221,754.86 and 631,158.36

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Solution

The fourth proportional to 885,724.92, 1,221,754.86 and 631,158.36 is: 870,609.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,724.92 : 1,221,754.86 = 631,158.36 : x
  2. Step 2: Convert to fraction form
    885,724.92/1,221,754.86 = 631,158.36/x
  3. Step 3: Cross multiply
    885,724.92x = 1,221,754.86 × 631,158.36
  4. Step 4: Simplify right side
    885,724.92x = 771,120,793,759.63
  5. Step 5: Solve for x
    x = 771,120,793,759.63/885,724.92
  6. Step 6: Final answer
    x = 870,609.80

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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.