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Finding the Fourth Proportional to 716,010.74, 987,848.88 and 443,980.76

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Solution

The fourth proportional to 716,010.74, 987,848.88 and 443,980.76 is: 612,540.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,010.74 : 987,848.88 = 443,980.76 : x
  2. Step 2: Convert to fraction form
    716,010.74/987,848.88 = 443,980.76/x
  3. Step 3: Cross multiply
    716,010.74x = 987,848.88 × 443,980.76
  4. Step 4: Simplify right side
    716,010.74x = 438,585,896,507.55
  5. Step 5: Solve for x
    x = 438,585,896,507.55/716,010.74
  6. Step 6: Final answer
    x = 612,540.95

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Double scale
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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.