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Finding the Fourth Proportional to 1,438,616, 1,985,290.08 and 802,712

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Solution

The fourth proportional to 1,438,616, 1,985,290.08 and 802,712 is: 1,107,742.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,616 : 1,985,290.08 = 802,712 : x
  2. Step 2: Convert to fraction form
    1,438,616/1,985,290.08 = 802,712/x
  3. Step 3: Cross multiply
    1,438,616x = 1,985,290.08 × 802,712
  4. Step 4: Simplify right side
    1,438,616x = 1,593,616,170,696.96
  5. Step 5: Solve for x
    x = 1,593,616,170,696.96/1,438,616
  6. Step 6: Final answer
    x = 1,107,742.56

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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.