Home / 715,986.71-988,097.13-444,142.20

Finding the Fourth Proportional to 715,986.71, 988,097.13 and 444,142.20

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Solution

The fourth proportional to 715,986.71, 988,097.13 and 444,142.20 is: 612,938.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,986.71 : 988,097.13 = 444,142.20 : x
  2. Step 2: Convert to fraction form
    715,986.71/988,097.13 = 444,142.20/x
  3. Step 3: Cross multiply
    715,986.71x = 988,097.13 × 444,142.20
  4. Step 4: Simplify right side
    715,986.71x = 438,855,633,131.89
  5. Step 5: Solve for x
    x = 438,855,633,131.89/715,986.71
  6. Step 6: Final answer
    x = 612,938.24

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Half scale
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Double scale
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Similar ratio
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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.