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Finding the Fourth Proportional to 421,840.96, 582,412.22 and 376,440.87

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Solution

The fourth proportional to 421,840.96, 582,412.22 and 376,440.87 is: 519,730.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,840.96 : 582,412.22 = 376,440.87 : x
  2. Step 2: Convert to fraction form
    421,840.96/582,412.22 = 376,440.87/x
  3. Step 3: Cross multiply
    421,840.96x = 582,412.22 × 376,440.87
  4. Step 4: Simplify right side
    421,840.96x = 219,243,758,001.17
  5. Step 5: Solve for x
    x = 219,243,758,001.17/421,840.96
  6. Step 6: Final answer
    x = 519,730.84

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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.