Home / 420,396.30-630,590.28-192,627.36

Finding the Fourth Proportional to 420,396.30, 630,590.28 and 192,627.36

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Solution

The fourth proportional to 420,396.30, 630,590.28 and 192,627.36 is: 288,939.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,396.30 : 630,590.28 = 192,627.36 : x
  2. Step 2: Convert to fraction form
    420,396.30/630,590.28 = 192,627.36/x
  3. Step 3: Cross multiply
    420,396.30x = 630,590.28 × 192,627.36
  4. Step 4: Simplify right side
    420,396.30x = 121,468,940,878.06
  5. Step 5: Solve for x
    x = 121,468,940,878.06/420,396.30
  6. Step 6: Final answer
    x = 288,939.13

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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.