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Finding the Fourth Proportional to 658,641.46, 908,926.11 and 356,835.46

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Solution

The fourth proportional to 658,641.46, 908,926.11 and 356,835.46 is: 492,433.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,641.46 : 908,926.11 = 356,835.46 : x
  2. Step 2: Convert to fraction form
    658,641.46/908,926.11 = 356,835.46/x
  3. Step 3: Cross multiply
    658,641.46x = 908,926.11 × 356,835.46
  4. Step 4: Simplify right side
    658,641.46x = 324,337,066,567.86
  5. Step 5: Solve for x
    x = 324,337,066,567.86/658,641.46
  6. Step 6: Final answer
    x = 492,433.42

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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.