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Finding the Fourth Proportional to 570,235.64, 787,121.88 and 328,614.50

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Solution

The fourth proportional to 570,235.64, 787,121.88 and 328,614.50 is: 453,601.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,235.64 : 787,121.88 = 328,614.50 : x
  2. Step 2: Convert to fraction form
    570,235.64/787,121.88 = 328,614.50/x
  3. Step 3: Cross multiply
    570,235.64x = 787,121.88 × 328,614.50
  4. Step 4: Simplify right side
    570,235.64x = 258,659,663,035.26
  5. Step 5: Solve for x
    x = 258,659,663,035.26/570,235.64
  6. Step 6: Final answer
    x = 453,601.36

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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.