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Finding the Fourth Proportional to 609,081.45, 913,108.47 and 383,945.76

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Solution

The fourth proportional to 609,081.45, 913,108.47 and 383,945.76 is: 575,594.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,081.45 : 913,108.47 = 383,945.76 : x
  2. Step 2: Convert to fraction form
    609,081.45/913,108.47 = 383,945.76/x
  3. Step 3: Cross multiply
    609,081.45x = 913,108.47 × 383,945.76
  4. Step 4: Simplify right side
    609,081.45x = 350,584,125,476.59
  5. Step 5: Solve for x
    x = 350,584,125,476.59/609,081.45
  6. Step 6: Final answer
    x = 575,594.82

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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.