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Finding the Fourth Proportional to 620,410.04, 930,679.80 and 171,131

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Solution

The fourth proportional to 620,410.04, 930,679.80 and 171,131 is: 256,714.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,410.04 : 930,679.80 = 171,131 : x
  2. Step 2: Convert to fraction form
    620,410.04/930,679.80 = 171,131/x
  3. Step 3: Cross multiply
    620,410.04x = 930,679.80 × 171,131
  4. Step 4: Simplify right side
    620,410.04x = 159,268,164,853.80
  5. Step 5: Solve for x
    x = 159,268,164,853.80/620,410.04
  6. Step 6: Final answer
    x = 256,714.36

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1.5x scale

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.