Home / 778,215.40-1,074,471.78-587,444.20

Finding the Fourth Proportional to 778,215.40, 1,074,471.78 and 587,444.20

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Solution

The fourth proportional to 778,215.40, 1,074,471.78 and 587,444.20 is: 811,076.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,215.40 : 1,074,471.78 = 587,444.20 : x
  2. Step 2: Convert to fraction form
    778,215.40/1,074,471.78 = 587,444.20/x
  3. Step 3: Cross multiply
    778,215.40x = 1,074,471.78 × 587,444.20
  4. Step 4: Simplify right side
    778,215.40x = 631,192,215,224.68
  5. Step 5: Solve for x
    x = 631,192,215,224.68/778,215.40
  6. Step 6: Final answer
    x = 811,076.49

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Double scale
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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.