Home / 772,206.87-1,157,301.51-430,636.66

Finding the Fourth Proportional to 772,206.87, 1,157,301.51 and 430,636.66

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Solution

The fourth proportional to 772,206.87, 1,157,301.51 and 430,636.66 is: 645,392.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,206.87 : 1,157,301.51 = 430,636.66 : x
  2. Step 2: Convert to fraction form
    772,206.87/1,157,301.51 = 430,636.66/x
  3. Step 3: Cross multiply
    772,206.87x = 1,157,301.51 × 430,636.66
  4. Step 4: Simplify right side
    772,206.87x = 498,376,456,879.36
  5. Step 5: Solve for x
    x = 498,376,456,879.36/772,206.87
  6. Step 6: Final answer
    x = 645,392.42

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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.