Home / 1,215,681.20-1,821,116.10-1,066,090.40

Finding the Fourth Proportional to 1,215,681.20, 1,821,116.10 and 1,066,090.40

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Solution

The fourth proportional to 1,215,681.20, 1,821,116.10 and 1,066,090.40 is: 1,597,025.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,681.20 : 1,821,116.10 = 1,066,090.40 : x
  2. Step 2: Convert to fraction form
    1,215,681.20/1,821,116.10 = 1,066,090.40/x
  3. Step 3: Cross multiply
    1,215,681.20x = 1,821,116.10 × 1,066,090.40
  4. Step 4: Simplify right side
    1,215,681.20x = 1,941,474,391,495.44
  5. Step 5: Solve for x
    x = 1,941,474,391,495.44/1,215,681.20
  6. Step 6: Final answer
    x = 1,597,025.92

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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.