Home / 817,313.16-1,223,607.78-518,131.56

Finding the Fourth Proportional to 817,313.16, 1,223,607.78 and 518,131.56

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Solution

The fourth proportional to 817,313.16, 1,223,607.78 and 518,131.56 is: 775,699.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,313.16 : 1,223,607.78 = 518,131.56 : x
  2. Step 2: Convert to fraction form
    817,313.16/1,223,607.78 = 518,131.56/x
  3. Step 3: Cross multiply
    817,313.16x = 1,223,607.78 × 518,131.56
  4. Step 4: Simplify right side
    817,313.16x = 633,989,807,879.54
  5. Step 5: Solve for x
    x = 633,989,807,879.54/817,313.16
  6. Step 6: Final answer
    x = 775,699.99

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1.5x scale

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.