Home / 7,128,079.80-10,692,119.70-5,214,892.20

Finding the Fourth Proportional to 7,128,079.80, 10,692,119.70 and 5,214,892.20

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Solution

The fourth proportional to 7,128,079.80, 10,692,119.70 and 5,214,892.20 is: 7,822,338.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128,079.80 : 10,692,119.70 = 5,214,892.20 : x
  2. Step 2: Convert to fraction form
    7,128,079.80/10,692,119.70 = 5,214,892.20/x
  3. Step 3: Cross multiply
    7,128,079.80x = 10,692,119.70 × 5,214,892.20
  4. Step 4: Simplify right side
    7,128,079.80x = 55,758,251,624,996.34
  5. Step 5: Solve for x
    x = 55,758,251,624,996.34/7,128,079.80
  6. Step 6: Final answer
    x = 7,822,338.30

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Similar ratio
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1.5x scale

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.