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Finding the Fourth Proportional to 658,611.93, 908,885.40 and 356,805.93

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Solution

The fourth proportional to 658,611.93, 908,885.40 and 356,805.93 is: 492,392.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,611.93 : 908,885.40 = 356,805.93 : x
  2. Step 2: Convert to fraction form
    658,611.93/908,885.40 = 356,805.93/x
  3. Step 3: Cross multiply
    658,611.93x = 908,885.40 × 356,805.93
  4. Step 4: Simplify right side
    658,611.93x = 324,295,700,410.42
  5. Step 5: Solve for x
    x = 324,295,700,410.42/658,611.93
  6. Step 6: Final answer
    x = 492,392.69

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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.