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Finding the Fourth Proportional to 565,559.79, 780,487.41 and 310,917.39

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Solution

The fourth proportional to 565,559.79, 780,487.41 and 310,917.39 is: 429,074.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,559.79 : 780,487.41 = 310,917.39 : x
  2. Step 2: Convert to fraction form
    565,559.79/780,487.41 = 310,917.39/x
  3. Step 3: Cross multiply
    565,559.79x = 780,487.41 × 310,917.39
  4. Step 4: Simplify right side
    565,559.79x = 242,667,108,445.06
  5. Step 5: Solve for x
    x = 242,667,108,445.06/565,559.79
  6. Step 6: Final answer
    x = 429,074.19

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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.