Home / 2,115,920.12-2,920,863.57-1,428,523.01

Finding the Fourth Proportional to 2,115,920.12, 2,920,863.57 and 1,428,523.01

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Solution

The fourth proportional to 2,115,920.12, 2,920,863.57 and 1,428,523.01 is: 1,971,965.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115,920.12 : 2,920,863.57 = 1,428,523.01 : x
  2. Step 2: Convert to fraction form
    2,115,920.12/2,920,863.57 = 1,428,523.01/x
  3. Step 3: Cross multiply
    2,115,920.12x = 2,920,863.57 × 1,428,523.01
  4. Step 4: Simplify right side
    2,115,920.12x = 4,172,520,809,807.71
  5. Step 5: Solve for x
    x = 4,172,520,809,807.71/2,115,920.12
  6. Step 6: Final answer
    x = 1,971,965.18

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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.