Home / 991,430.76-1,368,183.06-538,721.76

Finding the Fourth Proportional to 991,430.76, 1,368,183.06 and 538,721.76

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Solution

The fourth proportional to 991,430.76, 1,368,183.06 and 538,721.76 is: 743,440.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,430.76 : 1,368,183.06 = 538,721.76 : x
  2. Step 2: Convert to fraction form
    991,430.76/1,368,183.06 = 538,721.76/x
  3. Step 3: Cross multiply
    991,430.76x = 1,368,183.06 × 538,721.76
  4. Step 4: Simplify right side
    991,430.76x = 737,069,986,085.39
  5. Step 5: Solve for x
    x = 737,069,986,085.39/991,430.76
  6. Step 6: Final answer
    x = 743,440.71

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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.