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Finding the Fourth Proportional to 556,905.68, 768,530.60 and 302,256.88

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Solution

The fourth proportional to 556,905.68, 768,530.60 and 302,256.88 is: 417,114.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,905.68 : 768,530.60 = 302,256.88 : x
  2. Step 2: Convert to fraction form
    556,905.68/768,530.60 = 302,256.88/x
  3. Step 3: Cross multiply
    556,905.68x = 768,530.60 × 302,256.88
  4. Step 4: Simplify right side
    556,905.68x = 232,293,661,340.53
  5. Step 5: Solve for x
    x = 232,293,661,340.53/556,905.68
  6. Step 6: Final answer
    x = 417,114.91

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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.