Home / 782,047.40-1,078,668.87-717,724.39

Finding the Fourth Proportional to 782,047.40, 1,078,668.87 and 717,724.39

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Solution

The fourth proportional to 782,047.40, 1,078,668.87 and 717,724.39 is: 989,948.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,047.40 : 1,078,668.87 = 717,724.39 : x
  2. Step 2: Convert to fraction form
    782,047.40/1,078,668.87 = 717,724.39/x
  3. Step 3: Cross multiply
    782,047.40x = 1,078,668.87 × 717,724.39
  4. Step 4: Simplify right side
    782,047.40x = 774,186,956,732.74
  5. Step 5: Solve for x
    x = 774,186,956,732.74/782,047.40
  6. Step 6: Final answer
    x = 989,948.89

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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.