Home / 721,752,474.24-996,027,969.60-391,731,569.28

Finding the Fourth Proportional to 721,752,474.24, 996,027,969.60 and 391,731,569.28

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Solution

The fourth proportional to 721,752,474.24, 996,027,969.60 and 391,731,569.28 is: 540,594,751.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,752,474.24 : 996,027,969.60 = 391,731,569.28 : x
  2. Step 2: Convert to fraction form
    721,752,474.24/996,027,969.60 = 391,731,569.28/x
  3. Step 3: Cross multiply
    721,752,474.24x = 996,027,969.60 × 391,731,569.28
  4. Step 4: Simplify right side
    721,752,474.24x = 390,175,599,578,180,096
  5. Step 5: Solve for x
    x = 390,175,599,578,180,096/721,752,474.24
  6. Step 6: Final answer
    x = 540,594,751.67

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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.