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Finding the Fourth Proportional to 565,391.76, 779,980.50 and 347,402.52

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Solution

The fourth proportional to 565,391.76, 779,980.50 and 347,402.52 is: 479,255.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,391.76 : 779,980.50 = 347,402.52 : x
  2. Step 2: Convert to fraction form
    565,391.76/779,980.50 = 347,402.52/x
  3. Step 3: Cross multiply
    565,391.76x = 779,980.50 × 347,402.52
  4. Step 4: Simplify right side
    565,391.76x = 270,967,191,250.86
  5. Step 5: Solve for x
    x = 270,967,191,250.86/565,391.76
  6. Step 6: Final answer
    x = 479,255.64

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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.