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Finding the Fourth Proportional to 425,784.68, 637,639.52 and 281,602.66

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Solution

The fourth proportional to 425,784.68, 637,639.52 and 281,602.66 is: 421,717.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,784.68 : 637,639.52 = 281,602.66 : x
  2. Step 2: Convert to fraction form
    425,784.68/637,639.52 = 281,602.66/x
  3. Step 3: Cross multiply
    425,784.68x = 637,639.52 × 281,602.66
  4. Step 4: Simplify right side
    425,784.68x = 179,560,984,342.16
  5. Step 5: Solve for x
    x = 179,560,984,342.16/425,784.68
  6. Step 6: Final answer
    x = 421,717.81

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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.