Home / 721,315.92-1,081,270.78-300,712.08

Finding the Fourth Proportional to 721,315.92, 1,081,270.78 and 300,712.08

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Solution

The fourth proportional to 721,315.92, 1,081,270.78 and 300,712.08 is: 450,775.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,315.92 : 1,081,270.78 = 300,712.08 : x
  2. Step 2: Convert to fraction form
    721,315.92/1,081,270.78 = 300,712.08/x
  3. Step 3: Cross multiply
    721,315.92x = 1,081,270.78 × 300,712.08
  4. Step 4: Simplify right side
    721,315.92x = 325,151,185,297.02
  5. Step 5: Solve for x
    x = 325,151,185,297.02/721,315.92
  6. Step 6: Final answer
    x = 450,775.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.