Home / 1,818,138.10-2,730,159.60-1,221,743.20

Finding the Fourth Proportional to 1,818,138.10, 2,730,159.60 and 1,221,743.20

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Solution

The fourth proportional to 1,818,138.10, 2,730,159.60 and 1,221,743.20 is: 1,834,598.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,818,138.10 : 2,730,159.60 = 1,221,743.20 : x
  2. Step 2: Convert to fraction form
    1,818,138.10/2,730,159.60 = 1,221,743.20/x
  3. Step 3: Cross multiply
    1,818,138.10x = 2,730,159.60 × 1,221,743.20
  4. Step 4: Simplify right side
    1,818,138.10x = 3,335,553,926,214.72
  5. Step 5: Solve for x
    x = 3,335,553,926,214.72/1,818,138.10
  6. Step 6: Final answer
    x = 1,834,598.77

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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.