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Finding the Fourth Proportional to 568,490.04, 784,511.20 and 313,835.76

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Solution

The fourth proportional to 568,490.04, 784,511.20 and 313,835.76 is: 433,090.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,490.04 : 784,511.20 = 313,835.76 : x
  2. Step 2: Convert to fraction form
    568,490.04/784,511.20 = 313,835.76/x
  3. Step 3: Cross multiply
    568,490.04x = 784,511.20 × 313,835.76
  4. Step 4: Simplify right side
    568,490.04x = 246,207,668,680.51
  5. Step 5: Solve for x
    x = 246,207,668,680.51/568,490.04
  6. Step 6: Final answer
    x = 433,090.56

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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.