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Finding the Fourth Proportional to 565,627.92, 780,564.60 and 310,978.32

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Solution

The fourth proportional to 565,627.92, 780,564.60 and 310,978.32 is: 429,149.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,627.92 : 780,564.60 = 310,978.32 : x
  2. Step 2: Convert to fraction form
    565,627.92/780,564.60 = 310,978.32/x
  3. Step 3: Cross multiply
    565,627.92x = 780,564.60 × 310,978.32
  4. Step 4: Simplify right side
    565,627.92x = 242,738,667,959.47
  5. Step 5: Solve for x
    x = 242,738,667,959.47/565,627.92
  6. Step 6: Final answer
    x = 429,149.02

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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.