Home / 1,224,231.20-1,836,346.80-1,212,421.40

Finding the Fourth Proportional to 1,224,231.20, 1,836,346.80 and 1,212,421.40

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Solution

The fourth proportional to 1,224,231.20, 1,836,346.80 and 1,212,421.40 is: 1,818,632.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224,231.20 : 1,836,346.80 = 1,212,421.40 : x
  2. Step 2: Convert to fraction form
    1,224,231.20/1,836,346.80 = 1,212,421.40/x
  3. Step 3: Cross multiply
    1,224,231.20x = 1,836,346.80 × 1,212,421.40
  4. Step 4: Simplify right side
    1,224,231.20x = 2,226,426,158,141.52
  5. Step 5: Solve for x
    x = 2,226,426,158,141.52/1,224,231.20
  6. Step 6: Final answer
    x = 1,818,632.10

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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.