Home / 435,931.40-653,905.32-120,396.68

Finding the Fourth Proportional to 435,931.40, 653,905.32 and 120,396.68

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Solution

The fourth proportional to 435,931.40, 653,905.32 and 120,396.68 is: 180,597.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,931.40 : 653,905.32 = 120,396.68 : x
  2. Step 2: Convert to fraction form
    435,931.40/653,905.32 = 120,396.68/x
  3. Step 3: Cross multiply
    435,931.40x = 653,905.32 × 120,396.68
  4. Step 4: Simplify right side
    435,931.40x = 78,728,029,562.34
  5. Step 5: Solve for x
    x = 78,728,029,562.34/435,931.40
  6. Step 6: Final answer
    x = 180,597.29

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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.