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Finding the Fourth Proportional to 445,873.68, 614,961.72 and 309,904.92

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Solution

The fourth proportional to 445,873.68, 614,961.72 and 309,904.92 is: 427,429.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,873.68 : 614,961.72 = 309,904.92 : x
  2. Step 2: Convert to fraction form
    445,873.68/614,961.72 = 309,904.92/x
  3. Step 3: Cross multiply
    445,873.68x = 614,961.72 × 309,904.92
  4. Step 4: Simplify right side
    445,873.68x = 190,579,662,639.66
  5. Step 5: Solve for x
    x = 190,579,662,639.66/445,873.68
  6. Step 6: Final answer
    x = 427,429.72

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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.