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Finding the Fourth Proportional to 1,245,828.02, 1,719,242.69 and 672,868.04

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Solution

The fourth proportional to 1,245,828.02, 1,719,242.69 and 672,868.04 is: 928,557.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,828.02 : 1,719,242.69 = 672,868.04 : x
  2. Step 2: Convert to fraction form
    1,245,828.02/1,719,242.69 = 672,868.04/x
  3. Step 3: Cross multiply
    1,245,828.02x = 1,719,242.69 × 672,868.04
  4. Step 4: Simplify right side
    1,245,828.02x = 1,156,823,459,104.63
  5. Step 5: Solve for x
    x = 1,156,823,459,104.63/1,245,828.02
  6. Step 6: Final answer
    x = 928,557.91

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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.