Home / 689,320.22-1,033,350.03-289,989.20

Finding the Fourth Proportional to 689,320.22, 1,033,350.03 and 289,989.20

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Solution

The fourth proportional to 689,320.22, 1,033,350.03 and 289,989.20 is: 434,718.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,320.22 : 1,033,350.03 = 289,989.20 : x
  2. Step 2: Convert to fraction form
    689,320.22/1,033,350.03 = 289,989.20/x
  3. Step 3: Cross multiply
    689,320.22x = 1,033,350.03 × 289,989.20
  4. Step 4: Simplify right side
    689,320.22x = 299,660,343,352.93
  5. Step 5: Solve for x
    x = 299,660,343,352.93/689,320.22
  6. Step 6: Final answer
    x = 434,718.64

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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.