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Finding the Fourth Proportional to 1,492,642, 2,059,847.40 and 813,581.20

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Solution

The fourth proportional to 1,492,642, 2,059,847.40 and 813,581.20 is: 1,122,742.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,492,642 : 2,059,847.40 = 813,581.20 : x
  2. Step 2: Convert to fraction form
    1,492,642/2,059,847.40 = 813,581.20/x
  3. Step 3: Cross multiply
    1,492,642x = 2,059,847.40 × 813,581.20
  4. Step 4: Simplify right side
    1,492,642x = 1,675,853,119,508.88
  5. Step 5: Solve for x
    x = 1,675,853,119,508.88/1,492,642
  6. Step 6: Final answer
    x = 1,122,742.84

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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.