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Finding the Fourth Proportional to 402,468.80, 604,394.40 and 284,964.80

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Solution

The fourth proportional to 402,468.80, 604,394.40 and 284,964.80 is: 427,936.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,468.80 : 604,394.40 = 284,964.80 : x
  2. Step 2: Convert to fraction form
    402,468.80/604,394.40 = 284,964.80/x
  3. Step 3: Cross multiply
    402,468.80x = 604,394.40 × 284,964.80
  4. Step 4: Simplify right side
    402,468.80x = 172,231,129,317.12
  5. Step 5: Solve for x
    x = 172,231,129,317.12/402,468.80
  6. Step 6: Final answer
    x = 427,936.60

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1.5x scale

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.