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Finding the Fourth Proportional to 688,813.00, 950,573.27 and 378,728.69

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Solution

The fourth proportional to 688,813.00, 950,573.27 and 378,728.69 is: 522,651.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,813.00 : 950,573.27 = 378,728.69 : x
  2. Step 2: Convert to fraction form
    688,813.00/950,573.27 = 378,728.69/x
  3. Step 3: Cross multiply
    688,813.00x = 950,573.27 × 378,728.69
  4. Step 4: Simplify right side
    688,813.00x = 360,009,365,490.07
  5. Step 5: Solve for x
    x = 360,009,365,490.07/688,813.00
  6. Step 6: Final answer
    x = 522,651.82

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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.