Home / 821,665.40-1,231,346.10-653,473.40

Finding the Fourth Proportional to 821,665.40, 1,231,346.10 and 653,473.40

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Solution

The fourth proportional to 821,665.40, 1,231,346.10 and 653,473.40 is: 979,293.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,665.40 : 1,231,346.10 = 653,473.40 : x
  2. Step 2: Convert to fraction form
    821,665.40/1,231,346.10 = 653,473.40/x
  3. Step 3: Cross multiply
    821,665.40x = 1,231,346.10 × 653,473.40
  4. Step 4: Simplify right side
    821,665.40x = 804,651,922,543.74
  5. Step 5: Solve for x
    x = 804,651,922,543.74/821,665.40
  6. Step 6: Final answer
    x = 979,293.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.