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Finding the Fourth Proportional to 403,424.10, 606,448.35 and 285,909.30

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Solution

The fourth proportional to 403,424.10, 606,448.35 and 285,909.30 is: 429,793.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,424.10 : 606,448.35 = 285,909.30 : x
  2. Step 2: Convert to fraction form
    403,424.10/606,448.35 = 285,909.30/x
  3. Step 3: Cross multiply
    403,424.10x = 606,448.35 × 285,909.30
  4. Step 4: Simplify right side
    403,424.10x = 173,389,223,234.66
  5. Step 5: Solve for x
    x = 173,389,223,234.66/403,424.10
  6. Step 6: Final answer
    x = 429,793.91

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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.