Home / 721,743.23-1,080,457.88-436,570.76

Finding the Fourth Proportional to 721,743.23, 1,080,457.88 and 436,570.76

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Solution

The fourth proportional to 721,743.23, 1,080,457.88 and 436,570.76 is: 653,551.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,743.23 : 1,080,457.88 = 436,570.76 : x
  2. Step 2: Convert to fraction form
    721,743.23/1,080,457.88 = 436,570.76/x
  3. Step 3: Cross multiply
    721,743.23x = 1,080,457.88 × 436,570.76
  4. Step 4: Simplify right side
    721,743.23x = 471,696,310,234.45
  5. Step 5: Solve for x
    x = 471,696,310,234.45/721,743.23
  6. Step 6: Final answer
    x = 653,551.42

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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.