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Finding the Fourth Proportional to 483,438.80, 725,158.20 and 429,525.20

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Solution

The fourth proportional to 483,438.80, 725,158.20 and 429,525.20 is: 644,287.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,438.80 : 725,158.20 = 429,525.20 : x
  2. Step 2: Convert to fraction form
    483,438.80/725,158.20 = 429,525.20/x
  3. Step 3: Cross multiply
    483,438.80x = 725,158.20 × 429,525.20
  4. Step 4: Simplify right side
    483,438.80x = 311,473,720,886.64
  5. Step 5: Solve for x
    x = 311,473,720,886.64/483,438.80
  6. Step 6: Final answer
    x = 644,287.80

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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.