Home / 480,020.20-720,030.30-445,028.20

Finding the Fourth Proportional to 480,020.20, 720,030.30 and 445,028.20

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Solution

The fourth proportional to 480,020.20, 720,030.30 and 445,028.20 is: 667,542.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,020.20 : 720,030.30 = 445,028.20 : x
  2. Step 2: Convert to fraction form
    480,020.20/720,030.30 = 445,028.20/x
  3. Step 3: Cross multiply
    480,020.20x = 720,030.30 × 445,028.20
  4. Step 4: Simplify right side
    480,020.20x = 320,433,788,354.46
  5. Step 5: Solve for x
    x = 320,433,788,354.46/480,020.20
  6. Step 6: Final answer
    x = 667,542.30

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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.