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Finding the Fourth Proportional to 570,234.64, 787,120.50 and 328,613.50

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Solution

The fourth proportional to 570,234.64, 787,120.50 and 328,613.50 is: 453,599.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,234.64 : 787,120.50 = 328,613.50 : x
  2. Step 2: Convert to fraction form
    570,234.64/787,120.50 = 328,613.50/x
  3. Step 3: Cross multiply
    570,234.64x = 787,120.50 × 328,613.50
  4. Step 4: Simplify right side
    570,234.64x = 258,658,422,426.75
  5. Step 5: Solve for x
    x = 258,658,422,426.75/570,234.64
  6. Step 6: Final answer
    x = 453,599.98

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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.