Home / 858,113.46-1,287,378.27-259,038.81

Finding the Fourth Proportional to 858,113.46, 1,287,378.27 and 259,038.81

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Solution

The fourth proportional to 858,113.46, 1,287,378.27 and 259,038.81 is: 388,621.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,113.46 : 1,287,378.27 = 259,038.81 : x
  2. Step 2: Convert to fraction form
    858,113.46/1,287,378.27 = 259,038.81/x
  3. Step 3: Cross multiply
    858,113.46x = 1,287,378.27 × 259,038.81
  4. Step 4: Simplify right side
    858,113.46x = 333,480,935,080.66
  5. Step 5: Solve for x
    x = 333,480,935,080.66/858,113.46
  6. Step 6: Final answer
    x = 388,621.03

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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.