Home / 1,205,321-1,663,221.84-721,873.76

Finding the Fourth Proportional to 1,205,321, 1,663,221.84 and 721,873.76

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Solution

The fourth proportional to 1,205,321, 1,663,221.84 and 721,873.76 is: 996,113.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,205,321 : 1,663,221.84 = 721,873.76 : x
  2. Step 2: Convert to fraction form
    1,205,321/1,663,221.84 = 721,873.76/x
  3. Step 3: Cross multiply
    1,205,321x = 1,663,221.84 × 721,873.76
  4. Step 4: Simplify right side
    1,205,321x = 1,200,636,203,354.92
  5. Step 5: Solve for x
    x = 1,200,636,203,354.92/1,205,321
  6. Step 6: Final answer
    x = 996,113.24

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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.