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Finding the Fourth Proportional to 543,364.81, 813,986.92 and 355,807.69

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Solution

The fourth proportional to 543,364.81, 813,986.92 and 355,807.69 is: 533,017.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,364.81 : 813,986.92 = 355,807.69 : x
  2. Step 2: Convert to fraction form
    543,364.81/813,986.92 = 355,807.69/x
  3. Step 3: Cross multiply
    543,364.81x = 813,986.92 × 355,807.69
  4. Step 4: Simplify right side
    543,364.81x = 289,622,804,105.21
  5. Step 5: Solve for x
    x = 289,622,804,105.21/543,364.81
  6. Step 6: Final answer
    x = 533,017.23

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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.