Home / 817,321.16-1,223,619.76-518,139.56

Finding the Fourth Proportional to 817,321.16, 1,223,619.76 and 518,139.56

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Solution

The fourth proportional to 817,321.16, 1,223,619.76 and 518,139.56 is: 775,711.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,321.16 : 1,223,619.76 = 518,139.56 : x
  2. Step 2: Convert to fraction form
    817,321.16/1,223,619.76 = 518,139.56/x
  3. Step 3: Cross multiply
    817,321.16x = 1,223,619.76 × 518,139.56
  4. Step 4: Simplify right side
    817,321.16x = 634,005,804,053.71
  5. Step 5: Solve for x
    x = 634,005,804,053.71/817,321.16
  6. Step 6: Final answer
    x = 775,711.97

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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.