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Finding the Fourth Proportional to 570,079.08, 786,725.46 and 315,453.96

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Solution

The fourth proportional to 570,079.08, 786,725.46 and 315,453.96 is: 435,335.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,079.08 : 786,725.46 = 315,453.96 : x
  2. Step 2: Convert to fraction form
    570,079.08/786,725.46 = 315,453.96/x
  3. Step 3: Cross multiply
    570,079.08x = 786,725.46 × 315,453.96
  4. Step 4: Simplify right side
    570,079.08x = 248,175,661,789.82
  5. Step 5: Solve for x
    x = 248,175,661,789.82/570,079.08
  6. Step 6: Final answer
    x = 435,335.50

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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.