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Finding the Fourth Proportional to 565,630.44, 780,550.05 and 310,979.67

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Solution

The fourth proportional to 565,630.44, 780,550.05 and 310,979.67 is: 429,140.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,630.44 : 780,550.05 = 310,979.67 : x
  2. Step 2: Convert to fraction form
    565,630.44/780,550.05 = 310,979.67/x
  3. Step 3: Cross multiply
    565,630.44x = 780,550.05 × 310,979.67
  4. Step 4: Simplify right side
    565,630.44x = 242,735,196,967.48
  5. Step 5: Solve for x
    x = 242,735,196,967.48/565,630.44
  6. Step 6: Final answer
    x = 429,140.97

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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.