Home / 430,028.20-644,811.90-180,428.20

Finding the Fourth Proportional to 430,028.20, 644,811.90 and 180,428.20

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Solution

The fourth proportional to 430,028.20, 644,811.90 and 180,428.20 is: 270,545.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,028.20 : 644,811.90 = 180,428.20 : x
  2. Step 2: Convert to fraction form
    430,028.20/644,811.90 = 180,428.20/x
  3. Step 3: Cross multiply
    430,028.20x = 644,811.90 × 180,428.20
  4. Step 4: Simplify right side
    430,028.20x = 116,342,250,455.58
  5. Step 5: Solve for x
    x = 116,342,250,455.58/430,028.20
  6. Step 6: Final answer
    x = 270,545.63

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1.5x scale

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.