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Finding the Fourth Proportional to 556,910.18, 768,536.79 and 302,261.40

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Solution

The fourth proportional to 556,910.18, 768,536.79 and 302,261.40 is: 417,121.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,910.18 : 768,536.79 = 302,261.40 : x
  2. Step 2: Convert to fraction form
    556,910.18/768,536.79 = 302,261.40/x
  3. Step 3: Cross multiply
    556,910.18x = 768,536.79 × 302,261.40
  4. Step 4: Simplify right side
    556,910.18x = 232,299,006,096.91
  5. Step 5: Solve for x
    x = 232,299,006,096.91/556,910.18
  6. Step 6: Final answer
    x = 417,121.13

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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.