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Finding the Fourth Proportional to 404,905, 607,725.84 and 215,524.58

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Solution

The fourth proportional to 404,905, 607,725.84 and 215,524.58 is: 323,482.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,905 : 607,725.84 = 215,524.58 : x
  2. Step 2: Convert to fraction form
    404,905/607,725.84 = 215,524.58/x
  3. Step 3: Cross multiply
    404,905x = 607,725.84 × 215,524.58
  4. Step 4: Simplify right side
    404,905x = 130,979,856,421.15
  5. Step 5: Solve for x
    x = 130,979,856,421.15/404,905
  6. Step 6: Final answer
    x = 323,482.93

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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.