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Finding the Fourth Proportional to 764,978.04, 1,055,707.02 and 425,439

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Solution

The fourth proportional to 764,978.04, 1,055,707.02 and 425,439 is: 587,126.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,978.04 : 1,055,707.02 = 425,439 : x
  2. Step 2: Convert to fraction form
    764,978.04/1,055,707.02 = 425,439/x
  3. Step 3: Cross multiply
    764,978.04x = 1,055,707.02 × 425,439
  4. Step 4: Simplify right side
    764,978.04x = 449,138,938,881.78
  5. Step 5: Solve for x
    x = 449,138,938,881.78/764,978.04
  6. Step 6: Final answer
    x = 587,126.58

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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.