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Finding the Fourth Proportional to 556,960.68, 768,606.66 and 302,311.80

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Solution

The fourth proportional to 556,960.68, 768,606.66 and 302,311.80 is: 417,190.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,960.68 : 768,606.66 = 302,311.80 : x
  2. Step 2: Convert to fraction form
    556,960.68/768,606.66 = 302,311.80/x
  3. Step 3: Cross multiply
    556,960.68x = 768,606.66 × 302,311.80
  4. Step 4: Simplify right side
    556,960.68x = 232,358,862,876.59
  5. Step 5: Solve for x
    x = 232,358,862,876.59/556,960.68
  6. Step 6: Final answer
    x = 417,190.78

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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.