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Finding the Fourth Proportional to 1,299,623.04, 1,949,434.56 and 856,287.36

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Solution

The fourth proportional to 1,299,623.04, 1,949,434.56 and 856,287.36 is: 1,284,431.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299,623.04 : 1,949,434.56 = 856,287.36 : x
  2. Step 2: Convert to fraction form
    1,299,623.04/1,949,434.56 = 856,287.36/x
  3. Step 3: Cross multiply
    1,299,623.04x = 1,949,434.56 × 856,287.36
  4. Step 4: Simplify right side
    1,299,623.04x = 1,669,276,172,875.16
  5. Step 5: Solve for x
    x = 1,669,276,172,875.16/1,299,623.04
  6. Step 6: Final answer
    x = 1,284,431.04

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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.