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Finding the Fourth Proportional to 400,488.48, 600,656.15 and 120,005.73

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Solution

The fourth proportional to 400,488.48, 600,656.15 and 120,005.73 is: 179,985.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,488.48 : 600,656.15 = 120,005.73 : x
  2. Step 2: Convert to fraction form
    400,488.48/600,656.15 = 120,005.73/x
  3. Step 3: Cross multiply
    400,488.48x = 600,656.15 × 120,005.73
  4. Step 4: Simplify right side
    400,488.48x = 72,082,179,759.74
  5. Step 5: Solve for x
    x = 72,082,179,759.74/400,488.48
  6. Step 6: Final answer
    x = 179,985.65

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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.