Home / 721,007.76-1,081,666.80-215,608.80

Finding the Fourth Proportional to 721,007.76, 1,081,666.80 and 215,608.80

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Solution

The fourth proportional to 721,007.76, 1,081,666.80 and 215,608.80 is: 323,459.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,007.76 : 1,081,666.80 = 215,608.80 : x
  2. Step 2: Convert to fraction form
    721,007.76/1,081,666.80 = 215,608.80/x
  3. Step 3: Cross multiply
    721,007.76x = 1,081,666.80 × 215,608.80
  4. Step 4: Simplify right side
    721,007.76x = 233,216,880,747.84
  5. Step 5: Solve for x
    x = 233,216,880,747.84/721,007.76
  6. Step 6: Final answer
    x = 323,459.60

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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.