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Finding the Fourth Proportional to 543,295.68, 749,542.32 and 400,396.56

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Solution

The fourth proportional to 543,295.68, 749,542.32 and 400,396.56 is: 552,395.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,295.68 : 749,542.32 = 400,396.56 : x
  2. Step 2: Convert to fraction form
    543,295.68/749,542.32 = 400,396.56/x
  3. Step 3: Cross multiply
    543,295.68x = 749,542.32 × 400,396.56
  4. Step 4: Simplify right side
    543,295.68x = 300,114,166,502.42
  5. Step 5: Solve for x
    x = 300,114,166,502.42/543,295.68
  6. Step 6: Final answer
    x = 552,395.64

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1.5x scale

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.