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Finding the Fourth Proportional to 668,617.20, 922,467.33 and 381,934.31

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Solution

The fourth proportional to 668,617.20, 922,467.33 and 381,934.31 is: 526,941.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,617.20 : 922,467.33 = 381,934.31 : x
  2. Step 2: Convert to fraction form
    668,617.20/922,467.33 = 381,934.31/x
  3. Step 3: Cross multiply
    668,617.20x = 922,467.33 × 381,934.31
  4. Step 4: Simplify right side
    668,617.20x = 352,321,918,568.76
  5. Step 5: Solve for x
    x = 352,321,918,568.76/668,617.20
  6. Step 6: Final answer
    x = 526,941.15

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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.