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Finding the Fourth Proportional to 640,532.08, 960,047.70 and 261,216.28

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Solution

The fourth proportional to 640,532.08, 960,047.70 and 261,216.28 is: 391,518.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,532.08 : 960,047.70 = 261,216.28 : x
  2. Step 2: Convert to fraction form
    640,532.08/960,047.70 = 261,216.28/x
  3. Step 3: Cross multiply
    640,532.08x = 960,047.70 × 261,216.28
  4. Step 4: Simplify right side
    640,532.08x = 250,780,088,816.56
  5. Step 5: Solve for x
    x = 250,780,088,816.56/640,532.08
  6. Step 6: Final answer
    x = 391,518.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.