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Finding the Fourth Proportional to 570,611.60, 787,443.96 and 315,962.79

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Solution

The fourth proportional to 570,611.60, 787,443.96 and 315,962.79 is: 436,028.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,611.60 : 787,443.96 = 315,962.79 : x
  2. Step 2: Convert to fraction form
    570,611.60/787,443.96 = 315,962.79/x
  3. Step 3: Cross multiply
    570,611.60x = 787,443.96 × 315,962.79
  4. Step 4: Simplify right side
    570,611.60x = 248,802,990,570.25
  5. Step 5: Solve for x
    x = 248,802,990,570.25/570,611.60
  6. Step 6: Final answer
    x = 436,028.62

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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.