Home / 642,669.70-964,004.55-327,741.70

Finding the Fourth Proportional to 642,669.70, 964,004.55 and 327,741.70

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Solution

The fourth proportional to 642,669.70, 964,004.55 and 327,741.70 is: 491,612.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,669.70 : 964,004.55 = 327,741.70 : x
  2. Step 2: Convert to fraction form
    642,669.70/964,004.55 = 327,741.70/x
  3. Step 3: Cross multiply
    642,669.70x = 964,004.55 × 327,741.70
  4. Step 4: Simplify right side
    642,669.70x = 315,944,490,024.74
  5. Step 5: Solve for x
    x = 315,944,490,024.74/642,669.70
  6. Step 6: Final answer
    x = 491,612.55

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Double scale
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Similar ratio
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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.