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Finding the Fourth Proportional to 565,675.32, 780,634.88 and 311,042.92

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Solution

The fourth proportional to 565,675.32, 780,634.88 and 311,042.92 is: 429,240.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,675.32 : 780,634.88 = 311,042.92 : x
  2. Step 2: Convert to fraction form
    565,675.32/780,634.88 = 311,042.92/x
  3. Step 3: Cross multiply
    565,675.32x = 780,634.88 × 311,042.92
  4. Step 4: Simplify right side
    565,675.32x = 242,810,952,529.05
  5. Step 5: Solve for x
    x = 242,810,952,529.05/565,675.32
  6. Step 6: Final answer
    x = 429,240.85

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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.