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Finding the Fourth Proportional to 712,222.94, 982,870.52 and 389,963.03

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Solution

The fourth proportional to 712,222.94, 982,870.52 and 389,963.03 is: 538,150.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,222.94 : 982,870.52 = 389,963.03 : x
  2. Step 2: Convert to fraction form
    712,222.94/982,870.52 = 389,963.03/x
  3. Step 3: Cross multiply
    712,222.94x = 982,870.52 × 389,963.03
  4. Step 4: Simplify right side
    712,222.94x = 383,283,159,212.71
  5. Step 5: Solve for x
    x = 383,283,159,212.71/712,222.94
  6. Step 6: Final answer
    x = 538,150.54

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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.