Home / 812,668.81-1,118,916.97-715,812.25

Finding the Fourth Proportional to 812,668.81, 1,118,916.97 and 715,812.25

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Solution

The fourth proportional to 812,668.81, 1,118,916.97 and 715,812.25 is: 985,560.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,668.81 : 1,118,916.97 = 715,812.25 : x
  2. Step 2: Convert to fraction form
    812,668.81/1,118,916.97 = 715,812.25/x
  3. Step 3: Cross multiply
    812,668.81x = 1,118,916.97 × 715,812.25
  4. Step 4: Simplify right side
    812,668.81x = 800,934,473,858.88
  5. Step 5: Solve for x
    x = 800,934,473,858.88/812,668.81
  6. Step 6: Final answer
    x = 985,560.74

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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.