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Finding the Fourth Proportional to 480,021.80, 720,032.70 and 347,829.80

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Solution

The fourth proportional to 480,021.80, 720,032.70 and 347,829.80 is: 521,744.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,021.80 : 720,032.70 = 347,829.80 : x
  2. Step 2: Convert to fraction form
    480,021.80/720,032.70 = 347,829.80/x
  3. Step 3: Cross multiply
    480,021.80x = 720,032.70 × 347,829.80
  4. Step 4: Simplify right side
    480,021.80x = 250,448,830,034.46
  5. Step 5: Solve for x
    x = 250,448,830,034.46/480,021.80
  6. Step 6: Final answer
    x = 521,744.70

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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.