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Finding the Fourth Proportional to 854,537.80, 1,281,004.80 and 322,416.40

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Solution

The fourth proportional to 854,537.80, 1,281,004.80 and 322,416.40 is: 483,322.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,537.80 : 1,281,004.80 = 322,416.40 : x
  2. Step 2: Convert to fraction form
    854,537.80/1,281,004.80 = 322,416.40/x
  3. Step 3: Cross multiply
    854,537.80x = 1,281,004.80 × 322,416.40
  4. Step 4: Simplify right side
    854,537.80x = 413,016,955,998.72
  5. Step 5: Solve for x
    x = 413,016,955,998.72/854,537.80
  6. Step 6: Final answer
    x = 483,322.04

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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.