Home / 689,145.18-1,033,661.88-435,686.46

Finding the Fourth Proportional to 689,145.18, 1,033,661.88 and 435,686.46

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Solution

The fourth proportional to 689,145.18, 1,033,661.88 and 435,686.46 is: 653,494.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,145.18 : 1,033,661.88 = 435,686.46 : x
  2. Step 2: Convert to fraction form
    689,145.18/1,033,661.88 = 435,686.46/x
  3. Step 3: Cross multiply
    689,145.18x = 1,033,661.88 × 435,686.46
  4. Step 4: Simplify right side
    689,145.18x = 450,352,485,334.15
  5. Step 5: Solve for x
    x = 450,352,485,334.15/689,145.18
  6. Step 6: Final answer
    x = 653,494.36

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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.