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Finding the Fourth Proportional to 565,243.01, 780,070.25 and 323,520.43

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Solution

The fourth proportional to 565,243.01, 780,070.25 and 323,520.43 is: 446,478.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,243.01 : 780,070.25 = 323,520.43 : x
  2. Step 2: Convert to fraction form
    565,243.01/780,070.25 = 323,520.43/x
  3. Step 3: Cross multiply
    565,243.01x = 780,070.25 × 323,520.43
  4. Step 4: Simplify right side
    565,243.01x = 252,368,661,211.66
  5. Step 5: Solve for x
    x = 252,368,661,211.66/565,243.01
  6. Step 6: Final answer
    x = 446,478.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.