Home / 480,029.80-720,044.70-426,116.20

Finding the Fourth Proportional to 480,029.80, 720,044.70 and 426,116.20

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Solution

The fourth proportional to 480,029.80, 720,044.70 and 426,116.20 is: 639,174.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,029.80 : 720,044.70 = 426,116.20 : x
  2. Step 2: Convert to fraction form
    480,029.80/720,044.70 = 426,116.20/x
  3. Step 3: Cross multiply
    480,029.80x = 720,044.70 × 426,116.20
  4. Step 4: Simplify right side
    480,029.80x = 306,822,711,394.14
  5. Step 5: Solve for x
    x = 306,822,711,394.14/480,029.80
  6. Step 6: Final answer
    x = 639,174.30

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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.