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Finding the Fourth Proportional to 613,419.84, 918,904.50 and 487,273.68

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Solution

The fourth proportional to 613,419.84, 918,904.50 and 487,273.68 is: 729,937.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,419.84 : 918,904.50 = 487,273.68 : x
  2. Step 2: Convert to fraction form
    613,419.84/918,904.50 = 487,273.68/x
  3. Step 3: Cross multiply
    613,419.84x = 918,904.50 × 487,273.68
  4. Step 4: Simplify right side
    613,419.84x = 447,757,977,283.56
  5. Step 5: Solve for x
    x = 447,757,977,283.56/613,419.84
  6. Step 6: Final answer
    x = 729,937.23

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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.