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Finding the Fourth Proportional to 658,642.96, 908,928.18 and 356,836.96

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Solution

The fourth proportional to 658,642.96, 908,928.18 and 356,836.96 is: 492,435.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,642.96 : 908,928.18 = 356,836.96 : x
  2. Step 2: Convert to fraction form
    658,642.96/908,928.18 = 356,836.96/x
  3. Step 3: Cross multiply
    658,642.96x = 908,928.18 × 356,836.96
  4. Step 4: Simplify right side
    658,642.96x = 324,339,168,609.53
  5. Step 5: Solve for x
    x = 324,339,168,609.53/658,642.96
  6. Step 6: Final answer
    x = 492,435.49

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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.