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Finding the Fourth Proportional to 456,856.45, 630,169.47 and 366,429.47

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Solution

The fourth proportional to 456,856.45, 630,169.47 and 366,429.47 is: 505,438.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,856.45 : 630,169.47 = 366,429.47 : x
  2. Step 2: Convert to fraction form
    456,856.45/630,169.47 = 366,429.47/x
  3. Step 3: Cross multiply
    456,856.45x = 630,169.47 × 366,429.47
  4. Step 4: Simplify right side
    456,856.45x = 230,912,661,751.43
  5. Step 5: Solve for x
    x = 230,912,661,751.43/456,856.45
  6. Step 6: Final answer
    x = 505,438.12

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1.5x scale

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.