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Finding the Fourth Proportional to 487,271.80, 730,907.70 and 443,726.20

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Solution

The fourth proportional to 487,271.80, 730,907.70 and 443,726.20 is: 665,589.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,271.80 : 730,907.70 = 443,726.20 : x
  2. Step 2: Convert to fraction form
    487,271.80/730,907.70 = 443,726.20/x
  3. Step 3: Cross multiply
    487,271.80x = 730,907.70 × 443,726.20
  4. Step 4: Simplify right side
    487,271.80x = 324,322,896,271.74
  5. Step 5: Solve for x
    x = 324,322,896,271.74/487,271.80
  6. Step 6: Final answer
    x = 665,589.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.