Home / 1,326,411.40-1,989,617.10-329,139.40

Finding the Fourth Proportional to 1,326,411.40, 1,989,617.10 and 329,139.40

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Solution

The fourth proportional to 1,326,411.40, 1,989,617.10 and 329,139.40 is: 493,709.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326,411.40 : 1,989,617.10 = 329,139.40 : x
  2. Step 2: Convert to fraction form
    1,326,411.40/1,989,617.10 = 329,139.40/x
  3. Step 3: Cross multiply
    1,326,411.40x = 1,989,617.10 × 329,139.40
  4. Step 4: Simplify right side
    1,326,411.40x = 654,861,378,523.74
  5. Step 5: Solve for x
    x = 654,861,378,523.74/1,326,411.40
  6. Step 6: Final answer
    x = 493,709.10

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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.