Home / 1,387,954.20-2,081,931.30-828,082.20

Finding the Fourth Proportional to 1,387,954.20, 2,081,931.30 and 828,082.20

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Solution

The fourth proportional to 1,387,954.20, 2,081,931.30 and 828,082.20 is: 1,242,123.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,954.20 : 2,081,931.30 = 828,082.20 : x
  2. Step 2: Convert to fraction form
    1,387,954.20/2,081,931.30 = 828,082.20/x
  3. Step 3: Cross multiply
    1,387,954.20x = 2,081,931.30 × 828,082.20
  4. Step 4: Simplify right side
    1,387,954.20x = 1,724,010,251,152.86
  5. Step 5: Solve for x
    x = 1,724,010,251,152.86/1,387,954.20
  6. Step 6: Final answer
    x = 1,242,123.30

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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.