Home / 7,128,629.84-9,838,030.56-4,072,778.48

Finding the Fourth Proportional to 7,128,629.84, 9,838,030.56 and 4,072,778.48

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Solution

The fourth proportional to 7,128,629.84, 9,838,030.56 and 4,072,778.48 is: 5,620,732.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128,629.84 : 9,838,030.56 = 4,072,778.48 : x
  2. Step 2: Convert to fraction form
    7,128,629.84/9,838,030.56 = 4,072,778.48/x
  3. Step 3: Cross multiply
    7,128,629.84x = 9,838,030.56 × 4,072,778.48
  4. Step 4: Simplify right side
    7,128,629.84x = 40,068,119,150,350.35
  5. Step 5: Solve for x
    x = 40,068,119,150,350.35/7,128,629.84
  6. Step 6: Final answer
    x = 5,620,732.18

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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.