Home / 982,890.67-1,356,432.78-553,198.63

Finding the Fourth Proportional to 982,890.67, 1,356,432.78 and 553,198.63

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Solution

The fourth proportional to 982,890.67, 1,356,432.78 and 553,198.63 is: 763,438.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    982,890.67 : 1,356,432.78 = 553,198.63 : x
  2. Step 2: Convert to fraction form
    982,890.67/1,356,432.78 = 553,198.63/x
  3. Step 3: Cross multiply
    982,890.67x = 1,356,432.78 × 553,198.63
  4. Step 4: Simplify right side
    982,890.67x = 750,376,755,583.09
  5. Step 5: Solve for x
    x = 750,376,755,583.09/982,890.67
  6. Step 6: Final answer
    x = 763,438.68

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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.