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Finding the Fourth Proportional to 1,296,646.50, 1,789,541.44 and 723,805.58

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Solution

The fourth proportional to 1,296,646.50, 1,789,541.44 and 723,805.58 is: 998,946.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296,646.50 : 1,789,541.44 = 723,805.58 : x
  2. Step 2: Convert to fraction form
    1,296,646.50/1,789,541.44 = 723,805.58/x
  3. Step 3: Cross multiply
    1,296,646.50x = 1,789,541.44 × 723,805.58
  4. Step 4: Simplify right side
    1,296,646.50x = 1,295,280,079,913.24
  5. Step 5: Solve for x
    x = 1,295,280,079,913.24/1,296,646.50
  6. Step 6: Final answer
    x = 998,946.19

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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.