Home / 784,980.10-1,083,441.38-478,990.97

Finding the Fourth Proportional to 784,980.10, 1,083,441.38 and 478,990.97

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Solution

The fourth proportional to 784,980.10, 1,083,441.38 and 478,990.97 is: 661,110.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,980.10 : 1,083,441.38 = 478,990.97 : x
  2. Step 2: Convert to fraction form
    784,980.10/1,083,441.38 = 478,990.97/x
  3. Step 3: Cross multiply
    784,980.10x = 1,083,441.38 × 478,990.97
  4. Step 4: Simplify right side
    784,980.10x = 518,958,629,732.18
  5. Step 5: Solve for x
    x = 518,958,629,732.18/784,980.10
  6. Step 6: Final answer
    x = 661,110.56

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1.5x scale

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.