Home / 2,143,628.64-3,215,511-1,078,088.40

Finding the Fourth Proportional to 2,143,628.64, 3,215,511 and 1,078,088.40

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Solution

The fourth proportional to 2,143,628.64, 3,215,511 and 1,078,088.40 is: 1,617,166.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143,628.64 : 3,215,511 = 1,078,088.40 : x
  2. Step 2: Convert to fraction form
    2,143,628.64/3,215,511 = 1,078,088.40/x
  3. Step 3: Cross multiply
    2,143,628.64x = 3,215,511 × 1,078,088.40
  4. Step 4: Simplify right side
    2,143,628.64x = 3,466,605,109,172.40
  5. Step 5: Solve for x
    x = 3,466,605,109,172.40/2,143,628.64
  6. Step 6: Final answer
    x = 1,617,166.82

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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.