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Finding the Fourth Proportional to 612,206.73, 842,915.61 and 555,455.61

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Solution

The fourth proportional to 612,206.73, 842,915.61 and 555,455.61 is: 764,777.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,206.73 : 842,915.61 = 555,455.61 : x
  2. Step 2: Convert to fraction form
    612,206.73/842,915.61 = 555,455.61/x
  3. Step 3: Cross multiply
    612,206.73x = 842,915.61 × 555,455.61
  4. Step 4: Simplify right side
    612,206.73x = 468,202,204,331.07
  5. Step 5: Solve for x
    x = 468,202,204,331.07/612,206.73
  6. Step 6: Final answer
    x = 764,777.94

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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.