Home / 435,935.40-653,911.32-120,400.68

Finding the Fourth Proportional to 435,935.40, 653,911.32 and 120,400.68

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Solution

The fourth proportional to 435,935.40, 653,911.32 and 120,400.68 is: 180,603.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,935.40 : 653,911.32 = 120,400.68 : x
  2. Step 2: Convert to fraction form
    435,935.40/653,911.32 = 120,400.68/x
  3. Step 3: Cross multiply
    435,935.40x = 653,911.32 × 120,400.68
  4. Step 4: Simplify right side
    435,935.40x = 78,731,367,587.70
  5. Step 5: Solve for x
    x = 78,731,367,587.70/435,935.40
  6. Step 6: Final answer
    x = 180,603.29

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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.