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Finding the Fourth Proportional to 587,472.75, 810,717.35 and 319,200.75

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Solution

The fourth proportional to 587,472.75, 810,717.35 and 319,200.75 is: 440,499.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,472.75 : 810,717.35 = 319,200.75 : x
  2. Step 2: Convert to fraction form
    587,472.75/810,717.35 = 319,200.75/x
  3. Step 3: Cross multiply
    587,472.75x = 810,717.35 × 319,200.75
  4. Step 4: Simplify right side
    587,472.75x = 258,781,584,562.01
  5. Step 5: Solve for x
    x = 258,781,584,562.01/587,472.75
  6. Step 6: Final answer
    x = 440,499.72

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1.5x scale

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.