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Finding the Fourth Proportional to 519,952.80, 780,147.90 and 283,465.20

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Solution

The fourth proportional to 519,952.80, 780,147.90 and 283,465.20 is: 425,317.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,952.80 : 780,147.90 = 283,465.20 : x
  2. Step 2: Convert to fraction form
    519,952.80/780,147.90 = 283,465.20/x
  3. Step 3: Cross multiply
    519,952.80x = 780,147.90 × 283,465.20
  4. Step 4: Simplify right side
    519,952.80x = 221,144,780,503.08
  5. Step 5: Solve for x
    x = 221,144,780,503.08/519,952.80
  6. Step 6: Final answer
    x = 425,317.03

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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.