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Finding the Fourth Proportional to 640,412.76, 960,597.26 and 303,614.76

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Solution

The fourth proportional to 640,412.76, 960,597.26 and 303,614.76 is: 455,411.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,412.76 : 960,597.26 = 303,614.76 : x
  2. Step 2: Convert to fraction form
    640,412.76/960,597.26 = 303,614.76/x
  3. Step 3: Cross multiply
    640,412.76x = 960,597.26 × 303,614.76
  4. Step 4: Simplify right side
    640,412.76x = 291,651,506,551.56
  5. Step 5: Solve for x
    x = 291,651,506,551.56/640,412.76
  6. Step 6: Final answer
    x = 455,411.77

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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.