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Finding the Fourth Proportional to 445,856.21, 668,904.90 and 317,934.06

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Solution

The fourth proportional to 445,856.21, 668,904.90 and 317,934.06 is: 476,987.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,856.21 : 668,904.90 = 317,934.06 : x
  2. Step 2: Convert to fraction form
    445,856.21/668,904.90 = 317,934.06/x
  3. Step 3: Cross multiply
    445,856.21x = 668,904.90 × 317,934.06
  4. Step 4: Simplify right side
    445,856.21x = 212,667,650,610.89
  5. Step 5: Solve for x
    x = 212,667,650,610.89/445,856.21
  6. Step 6: Final answer
    x = 476,987.08

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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.