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Finding the Fourth Proportional to 681,319.74, 940,222.13 and 371,220.86

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Solution

The fourth proportional to 681,319.74, 940,222.13 and 371,220.86 is: 512,285.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,319.74 : 940,222.13 = 371,220.86 : x
  2. Step 2: Convert to fraction form
    681,319.74/940,222.13 = 371,220.86/x
  3. Step 3: Cross multiply
    681,319.74x = 940,222.13 × 371,220.86
  4. Step 4: Simplify right side
    681,319.74x = 349,030,061,132.42
  5. Step 5: Solve for x
    x = 349,030,061,132.42/681,319.74
  6. Step 6: Final answer
    x = 512,285.26

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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.