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Finding the Fourth Proportional to 579,646.88, 869,387.23 and 280,047.02

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Solution

The fourth proportional to 579,646.88, 869,387.23 and 280,047.02 is: 420,030.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,646.88 : 869,387.23 = 280,047.02 : x
  2. Step 2: Convert to fraction form
    579,646.88/869,387.23 = 280,047.02/x
  3. Step 3: Cross multiply
    579,646.88x = 869,387.23 × 280,047.02
  4. Step 4: Simplify right side
    579,646.88x = 243,469,302,305.72
  5. Step 5: Solve for x
    x = 243,469,302,305.72/579,646.88
  6. Step 6: Final answer
    x = 420,030.38

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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.