Home / 638,441.60-881,089.08-351,961.16

Finding the Fourth Proportional to 638,441.60, 881,089.08 and 351,961.16

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Solution

The fourth proportional to 638,441.60, 881,089.08 and 351,961.16 is: 485,728.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,441.60 : 881,089.08 = 351,961.16 : x
  2. Step 2: Convert to fraction form
    638,441.60/881,089.08 = 351,961.16/x
  3. Step 3: Cross multiply
    638,441.60x = 881,089.08 × 351,961.16
  4. Step 4: Simplify right side
    638,441.60x = 310,109,134,660.13
  5. Step 5: Solve for x
    x = 310,109,134,660.13/638,441.60
  6. Step 6: Final answer
    x = 485,728.27

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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.