Home / 480,021.60-720,032.40-401,872.80

Finding the Fourth Proportional to 480,021.60, 720,032.40 and 401,872.80

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Solution

The fourth proportional to 480,021.60, 720,032.40 and 401,872.80 is: 602,809.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,021.60 : 720,032.40 = 401,872.80 : x
  2. Step 2: Convert to fraction form
    480,021.60/720,032.40 = 401,872.80/x
  3. Step 3: Cross multiply
    480,021.60x = 720,032.40 × 401,872.80
  4. Step 4: Simplify right side
    480,021.60x = 289,361,436,678.72
  5. Step 5: Solve for x
    x = 289,361,436,678.72/480,021.60
  6. Step 6: Final answer
    x = 602,809.20

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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.