Home / 815,172.84-1,222,763.34-477,976.32

Finding the Fourth Proportional to 815,172.84, 1,222,763.34 and 477,976.32

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Solution

The fourth proportional to 815,172.84, 1,222,763.34 and 477,976.32 is: 716,966.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,172.84 : 1,222,763.34 = 477,976.32 : x
  2. Step 2: Convert to fraction form
    815,172.84/1,222,763.34 = 477,976.32/x
  3. Step 3: Cross multiply
    815,172.84x = 1,222,763.34 × 477,976.32
  4. Step 4: Simplify right side
    815,172.84x = 584,451,921,484.11
  5. Step 5: Solve for x
    x = 584,451,921,484.11/815,172.84
  6. Step 6: Final answer
    x = 716,966.87

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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.