Home / 485,416,578.64-728,643,022.39-209,204,104.67

Finding the Fourth Proportional to 485,416,578.64, 728,643,022.39 and 209,204,104.67

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Solution

The fourth proportional to 485,416,578.64, 728,643,022.39 and 209,204,104.67 is: 314,029,470.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,416,578.64 : 728,643,022.39 = 209,204,104.67 : x
  2. Step 2: Convert to fraction form
    485,416,578.64/728,643,022.39 = 209,204,104.67/x
  3. Step 3: Cross multiply
    485,416,578.64x = 728,643,022.39 × 209,204,104.67
  4. Step 4: Simplify right side
    485,416,578.64x = 152,435,111,123,142,688
  5. Step 5: Solve for x
    x = 152,435,111,123,142,688/485,416,578.64
  6. Step 6: Final answer
    x = 314,029,470.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.