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Finding the Fourth Proportional to 565,673.32, 780,632.12 and 311,040.92

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Solution

The fourth proportional to 565,673.32, 780,632.12 and 311,040.92 is: 429,238.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,673.32 : 780,632.12 = 311,040.92 : x
  2. Step 2: Convert to fraction form
    565,673.32/780,632.12 = 311,040.92/x
  3. Step 3: Cross multiply
    565,673.32x = 780,632.12 × 311,040.92
  4. Step 4: Simplify right side
    565,673.32x = 242,808,532,786.35
  5. Step 5: Solve for x
    x = 242,808,532,786.35/565,673.32
  6. Step 6: Final answer
    x = 429,238.09

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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.