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Finding the Fourth Proportional to 1,147,557.07, 1,582,739.08 and 739,725.31

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Solution

The fourth proportional to 1,147,557.07, 1,582,739.08 and 739,725.31 is: 1,020,247.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147,557.07 : 1,582,739.08 = 739,725.31 : x
  2. Step 2: Convert to fraction form
    1,147,557.07/1,582,739.08 = 739,725.31/x
  3. Step 3: Cross multiply
    1,147,557.07x = 1,582,739.08 × 739,725.31
  4. Step 4: Simplify right side
    1,147,557.07x = 1,170,792,156,602.12
  5. Step 5: Solve for x
    x = 1,170,792,156,602.12/1,147,557.07
  6. Step 6: Final answer
    x = 1,020,247.43

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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.