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Finding the Fourth Proportional to 404,813.78, 558,690.40 and 336,710.60

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Solution

The fourth proportional to 404,813.78, 558,690.40 and 336,710.60 is: 464,700.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,813.78 : 558,690.40 = 336,710.60 : x
  2. Step 2: Convert to fraction form
    404,813.78/558,690.40 = 336,710.60/x
  3. Step 3: Cross multiply
    404,813.78x = 558,690.40 × 336,710.60
  4. Step 4: Simplify right side
    404,813.78x = 188,116,979,798.24
  5. Step 5: Solve for x
    x = 188,116,979,798.24/404,813.78
  6. Step 6: Final answer
    x = 464,700.04

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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.