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Finding the Fourth Proportional to 613,906.40, 920,635.08 and 234,639.59

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Solution

The fourth proportional to 613,906.40, 920,635.08 and 234,639.59 is: 351,873.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,906.40 : 920,635.08 = 234,639.59 : x
  2. Step 2: Convert to fraction form
    613,906.40/920,635.08 = 234,639.59/x
  3. Step 3: Cross multiply
    613,906.40x = 920,635.08 × 234,639.59
  4. Step 4: Simplify right side
    613,906.40x = 216,017,437,710.82
  5. Step 5: Solve for x
    x = 216,017,437,710.82/613,906.40
  6. Step 6: Final answer
    x = 351,873.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.