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Finding the Fourth Proportional to 1,268,006.78, 1,749,916.43 and 695,071.10

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Solution

The fourth proportional to 1,268,006.78, 1,749,916.43 and 695,071.10 is: 959,234.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268,006.78 : 1,749,916.43 = 695,071.10 : x
  2. Step 2: Convert to fraction form
    1,268,006.78/1,749,916.43 = 695,071.10/x
  3. Step 3: Cross multiply
    1,268,006.78x = 1,749,916.43 × 695,071.10
  4. Step 4: Simplify right side
    1,268,006.78x = 1,216,316,325,683.24
  5. Step 5: Solve for x
    x = 1,216,316,325,683.24/1,268,006.78
  6. Step 6: Final answer
    x = 959,234.88

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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.