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Finding the Fourth Proportional to 865,725.12, 1,299,051.90 and 360,635.04

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Solution

The fourth proportional to 865,725.12, 1,299,051.90 and 360,635.04 is: 541,145.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,725.12 : 1,299,051.90 = 360,635.04 : x
  2. Step 2: Convert to fraction form
    865,725.12/1,299,051.90 = 360,635.04/x
  3. Step 3: Cross multiply
    865,725.12x = 1,299,051.90 × 360,635.04
  4. Step 4: Simplify right side
    865,725.12x = 468,483,633,918.58
  5. Step 5: Solve for x
    x = 468,483,633,918.58/865,725.12
  6. Step 6: Final answer
    x = 541,145.94

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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.