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Finding the Fourth Proportional to 668,105.28, 922,023 and 396,334.08

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Solution

The fourth proportional to 668,105.28, 922,023 and 396,334.08 is: 546,963.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,105.28 : 922,023 = 396,334.08 : x
  2. Step 2: Convert to fraction form
    668,105.28/922,023 = 396,334.08/x
  3. Step 3: Cross multiply
    668,105.28x = 922,023 × 396,334.08
  4. Step 4: Simplify right side
    668,105.28x = 365,429,137,443.84
  5. Step 5: Solve for x
    x = 365,429,137,443.84/668,105.28
  6. Step 6: Final answer
    x = 546,963.40

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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.