Home / 721,387.04-1,081,377.28-300,783.20

Finding the Fourth Proportional to 721,387.04, 1,081,377.28 and 300,783.20

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Solution

The fourth proportional to 721,387.04, 1,081,377.28 and 300,783.20 is: 450,881.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,387.04 : 1,081,377.28 = 300,783.20 : x
  2. Step 2: Convert to fraction form
    721,387.04/1,081,377.28 = 300,783.20/x
  3. Step 3: Cross multiply
    721,387.04x = 1,081,377.28 × 300,783.20
  4. Step 4: Simplify right side
    721,387.04x = 325,260,118,685.70
  5. Step 5: Solve for x
    x = 325,260,118,685.70/721,387.04
  6. Step 6: Final answer
    x = 450,881.57

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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.