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Finding the Fourth Proportional to 671,454.21, 927,439.22 and 487,399.22

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Solution

The fourth proportional to 671,454.21, 927,439.22 and 487,399.22 is: 673,215.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,454.21 : 927,439.22 = 487,399.22 : x
  2. Step 2: Convert to fraction form
    671,454.21/927,439.22 = 487,399.22/x
  3. Step 3: Cross multiply
    671,454.21x = 927,439.22 × 487,399.22
  4. Step 4: Simplify right side
    671,454.21x = 452,033,154,959.83
  5. Step 5: Solve for x
    x = 452,033,154,959.83/671,454.21
  6. Step 6: Final answer
    x = 673,215.16

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1.5x scale

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.