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Finding the Fourth Proportional to 1,321,710, 1,824,115.32 and 785,166

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Solution

The fourth proportional to 1,321,710, 1,824,115.32 and 785,166 is: 1,083,621.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,710 : 1,824,115.32 = 785,166 : x
  2. Step 2: Convert to fraction form
    1,321,710/1,824,115.32 = 785,166/x
  3. Step 3: Cross multiply
    1,321,710x = 1,824,115.32 × 785,166
  4. Step 4: Simplify right side
    1,321,710x = 1,432,233,329,343.12
  5. Step 5: Solve for x
    x = 1,432,233,329,343.12/1,321,710
  6. Step 6: Final answer
    x = 1,083,621.47

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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.