Home / 480,028.20-720,042.30-445,036.20

Finding the Fourth Proportional to 480,028.20, 720,042.30 and 445,036.20

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Solution

The fourth proportional to 480,028.20, 720,042.30 and 445,036.20 is: 667,554.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,028.20 : 720,042.30 = 445,036.20 : x
  2. Step 2: Convert to fraction form
    480,028.20/720,042.30 = 445,036.20/x
  3. Step 3: Cross multiply
    480,028.20x = 720,042.30 × 445,036.20
  4. Step 4: Simplify right side
    480,028.20x = 320,444,889,031.26
  5. Step 5: Solve for x
    x = 320,444,889,031.26/480,028.20
  6. Step 6: Final answer
    x = 667,554.30

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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.