Home / 745,155,405.75-1,028,321,260.76-410,639,930.57

Finding the Fourth Proportional to 745,155,405.75, 1,028,321,260.76 and 410,639,930.57

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Solution

The fourth proportional to 745,155,405.75, 1,028,321,260.76 and 410,639,930.57 is: 566,686,851.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,155,405.75 : 1,028,321,260.76 = 410,639,930.57 : x
  2. Step 2: Convert to fraction form
    745,155,405.75/1,028,321,260.76 = 410,639,930.57/x
  3. Step 3: Cross multiply
    745,155,405.75x = 1,028,321,260.76 × 410,639,930.57
  4. Step 4: Simplify right side
    745,155,405.75x = 422,269,771,123,439,040
  5. Step 5: Solve for x
    x = 422,269,771,123,439,040/745,155,405.75
  6. Step 6: Final answer
    x = 566,686,851.98

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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.