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Finding the Fourth Proportional to 536,870.79, 803,553.81 and 394,678.41

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Solution

The fourth proportional to 536,870.79, 803,553.81 and 394,678.41 is: 590,729.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,870.79 : 803,553.81 = 394,678.41 : x
  2. Step 2: Convert to fraction form
    536,870.79/803,553.81 = 394,678.41/x
  3. Step 3: Cross multiply
    536,870.79x = 803,553.81 × 394,678.41
  4. Step 4: Simplify right side
    536,870.79x = 317,145,340,080.24
  5. Step 5: Solve for x
    x = 317,145,340,080.24/536,870.79
  6. Step 6: Final answer
    x = 590,729.36

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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.