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Finding the Fourth Proportional to 565,560.16, 780,487.92 and 310,917.76

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Solution

The fourth proportional to 565,560.16, 780,487.92 and 310,917.76 is: 429,074.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,560.16 : 780,487.92 = 310,917.76 : x
  2. Step 2: Convert to fraction form
    565,560.16/780,487.92 = 310,917.76/x
  3. Step 3: Cross multiply
    565,560.16x = 780,487.92 × 310,917.76
  4. Step 4: Simplify right side
    565,560.16x = 242,667,555,793.46
  5. Step 5: Solve for x
    x = 242,667,555,793.46/565,560.16
  6. Step 6: Final answer
    x = 429,074.70

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1.5x scale

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.