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Finding the Fourth Proportional to 716,010.71, 987,849 and 443,980.71

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Solution

The fourth proportional to 716,010.71, 987,849 and 443,980.71 is: 612,540.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,010.71 : 987,849 = 443,980.71 : x
  2. Step 2: Convert to fraction form
    716,010.71/987,849 = 443,980.71/x
  3. Step 3: Cross multiply
    716,010.71x = 987,849 × 443,980.71
  4. Step 4: Simplify right side
    716,010.71x = 438,585,900,392.79
  5. Step 5: Solve for x
    x = 438,585,900,392.79/716,010.71
  6. Step 6: Final answer
    x = 612,540.98

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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.