Home / 1,409,206.86-2,113,898.31-398,406.78

Finding the Fourth Proportional to 1,409,206.86, 2,113,898.31 and 398,406.78

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Solution

The fourth proportional to 1,409,206.86, 2,113,898.31 and 398,406.78 is: 597,635.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,409,206.86 : 2,113,898.31 = 398,406.78 : x
  2. Step 2: Convert to fraction form
    1,409,206.86/2,113,898.31 = 398,406.78/x
  3. Step 3: Cross multiply
    1,409,206.86x = 2,113,898.31 × 398,406.78
  4. Step 4: Simplify right side
    1,409,206.86x = 842,191,418,934.54
  5. Step 5: Solve for x
    x = 842,191,418,934.54/1,409,206.86
  6. Step 6: Final answer
    x = 597,635.05

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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.