Home / 991,707.84-1,368,558.72-538,997.76

Finding the Fourth Proportional to 991,707.84, 1,368,558.72 and 538,997.76

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Solution

The fourth proportional to 991,707.84, 1,368,558.72 and 538,997.76 is: 743,817.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,707.84 : 1,368,558.72 = 538,997.76 : x
  2. Step 2: Convert to fraction form
    991,707.84/1,368,558.72 = 538,997.76/x
  3. Step 3: Cross multiply
    991,707.84x = 1,368,558.72 × 538,997.76
  4. Step 4: Simplify right side
    991,707.84x = 737,650,084,508.47
  5. Step 5: Solve for x
    x = 737,650,084,508.47/991,707.84
  6. Step 6: Final answer
    x = 743,817.94

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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.