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Finding the Fourth Proportional to 715,706.48, 987,895 and 461,056.88

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Solution

The fourth proportional to 715,706.48, 987,895 and 461,056.88 is: 636,400.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,706.48 : 987,895 = 461,056.88 : x
  2. Step 2: Convert to fraction form
    715,706.48/987,895 = 461,056.88/x
  3. Step 3: Cross multiply
    715,706.48x = 987,895 × 461,056.88
  4. Step 4: Simplify right side
    715,706.48x = 455,475,786,467.60
  5. Step 5: Solve for x
    x = 455,475,786,467.60/715,706.48
  6. Step 6: Final answer
    x = 636,400.26

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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.