Home / 1,081,365.92-1,492,242.72-645,857.12

Finding the Fourth Proportional to 1,081,365.92, 1,492,242.72 and 645,857.12

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Solution

The fourth proportional to 1,081,365.92, 1,492,242.72 and 645,857.12 is: 891,257.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,081,365.92 : 1,492,242.72 = 645,857.12 : x
  2. Step 2: Convert to fraction form
    1,081,365.92/1,492,242.72 = 645,857.12/x
  3. Step 3: Cross multiply
    1,081,365.92x = 1,492,242.72 × 645,857.12
  4. Step 4: Simplify right side
    1,081,365.92x = 963,775,585,480.17
  5. Step 5: Solve for x
    x = 963,775,585,480.17/1,081,365.92
  6. Step 6: Final answer
    x = 891,257.59

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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.