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Finding the Fourth Proportional to 640,300.56, 960,616.89 and 340,534.65

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Solution

The fourth proportional to 640,300.56, 960,616.89 and 340,534.65 is: 510,890.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,300.56 : 960,616.89 = 340,534.65 : x
  2. Step 2: Convert to fraction form
    640,300.56/960,616.89 = 340,534.65/x
  3. Step 3: Cross multiply
    640,300.56x = 960,616.89 × 340,534.65
  4. Step 4: Simplify right side
    640,300.56x = 327,123,334,018.70
  5. Step 5: Solve for x
    x = 327,123,334,018.70/640,300.56
  6. Step 6: Final answer
    x = 510,890.28

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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.