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Finding the Fourth Proportional to 1,612,917.12, 2,225,808.06 and 887,749.30

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Solution

The fourth proportional to 1,612,917.12, 2,225,808.06 and 887,749.30 is: 1,225,084.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,612,917.12 : 2,225,808.06 = 887,749.30 : x
  2. Step 2: Convert to fraction form
    1,612,917.12/2,225,808.06 = 887,749.30/x
  3. Step 3: Cross multiply
    1,612,917.12x = 2,225,808.06 × 887,749.30
  4. Step 4: Simplify right side
    1,612,917.12x = 1,975,959,547,199.36
  5. Step 5: Solve for x
    x = 1,975,959,547,199.36/1,612,917.12
  6. Step 6: Final answer
    x = 1,225,084.37

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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.