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Finding the Fourth Proportional to 445,117.76, 613,927.44 and 309,151.92

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Solution

The fourth proportional to 445,117.76, 613,927.44 and 309,151.92 is: 426,396.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,117.76 : 613,927.44 = 309,151.92 : x
  2. Step 2: Convert to fraction form
    445,117.76/613,927.44 = 309,151.92/x
  3. Step 3: Cross multiply
    445,117.76x = 613,927.44 × 309,151.92
  4. Step 4: Simplify right side
    445,117.76x = 189,796,846,816.69
  5. Step 5: Solve for x
    x = 189,796,846,816.69/445,117.76
  6. Step 6: Final answer
    x = 426,396.93

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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.