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Finding the Fourth Proportional to 609,091.96, 840,865.26 and 379,719.16

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Solution

The fourth proportional to 609,091.96, 840,865.26 and 379,719.16 is: 524,210.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,091.96 : 840,865.26 = 379,719.16 : x
  2. Step 2: Convert to fraction form
    609,091.96/840,865.26 = 379,719.16/x
  3. Step 3: Cross multiply
    609,091.96x = 840,865.26 × 379,719.16
  4. Step 4: Simplify right side
    609,091.96x = 319,292,650,200.38
  5. Step 5: Solve for x
    x = 319,292,650,200.38/609,091.96
  6. Step 6: Final answer
    x = 524,210.91

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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.