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Finding the Fourth Proportional to 1,295,621.02, 1,787,952.36 and 722,660.74

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Solution

The fourth proportional to 1,295,621.02, 1,787,952.36 and 722,660.74 is: 997,269.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295,621.02 : 1,787,952.36 = 722,660.74 : x
  2. Step 2: Convert to fraction form
    1,295,621.02/1,787,952.36 = 722,660.74/x
  3. Step 3: Cross multiply
    1,295,621.02x = 1,787,952.36 × 722,660.74
  4. Step 4: Simplify right side
    1,295,621.02x = 1,292,082,975,562.35
  5. Step 5: Solve for x
    x = 1,292,082,975,562.35/1,295,621.02
  6. Step 6: Final answer
    x = 997,269.23

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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.