Home / 774,609.12-1,068,662.70-571,143.60

Finding the Fourth Proportional to 774,609.12, 1,068,662.70 and 571,143.60

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Solution

The fourth proportional to 774,609.12, 1,068,662.70 and 571,143.60 is: 787,958.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    774,609.12 : 1,068,662.70 = 571,143.60 : x
  2. Step 2: Convert to fraction form
    774,609.12/1,068,662.70 = 571,143.60/x
  3. Step 3: Cross multiply
    774,609.12x = 1,068,662.70 × 571,143.60
  4. Step 4: Simplify right side
    774,609.12x = 610,359,861,663.72
  5. Step 5: Solve for x
    x = 610,359,861,663.72/774,609.12
  6. Step 6: Final answer
    x = 787,958.53

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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.