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Finding the Fourth Proportional to 656,596.48, 906,102.72 and 354,789.76

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Solution

The fourth proportional to 656,596.48, 906,102.72 and 354,789.76 is: 489,609.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,596.48 : 906,102.72 = 354,789.76 : x
  2. Step 2: Convert to fraction form
    656,596.48/906,102.72 = 354,789.76/x
  3. Step 3: Cross multiply
    656,596.48x = 906,102.72 × 354,789.76
  4. Step 4: Simplify right side
    656,596.48x = 321,475,966,564.15
  5. Step 5: Solve for x
    x = 321,475,966,564.15/656,596.48
  6. Step 6: Final answer
    x = 489,609.64

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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.