Home / 3,870,649.28-5,341,678.30-2,151,798.50

Finding the Fourth Proportional to 3,870,649.28, 5,341,678.30 and 2,151,798.50

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Solution

The fourth proportional to 3,870,649.28, 5,341,678.30 and 2,151,798.50 is: 2,969,583.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,870,649.28 : 5,341,678.30 = 2,151,798.50 : x
  2. Step 2: Convert to fraction form
    3,870,649.28/5,341,678.30 = 2,151,798.50/x
  3. Step 3: Cross multiply
    3,870,649.28x = 5,341,678.30 × 2,151,798.50
  4. Step 4: Simplify right side
    3,870,649.28x = 11,494,215,353,422.55
  5. Step 5: Solve for x
    x = 11,494,215,353,422.55/3,870,649.28
  6. Step 6: Final answer
    x = 2,969,583.27

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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.