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Finding the Fourth Proportional to 570,611.75, 787,434.59 and 315,957.47

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Solution

The fourth proportional to 570,611.75, 787,434.59 and 315,957.47 is: 436,015.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,611.75 : 787,434.59 = 315,957.47 : x
  2. Step 2: Convert to fraction form
    570,611.75/787,434.59 = 315,957.47/x
  3. Step 3: Cross multiply
    570,611.75x = 787,434.59 × 315,957.47
  4. Step 4: Simplify right side
    570,611.75x = 248,795,840,846.89
  5. Step 5: Solve for x
    x = 248,795,840,846.89/570,611.75
  6. Step 6: Final answer
    x = 436,015.98

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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.