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Finding the Fourth Proportional to 457,284.60, 685,926.90 and 331,313.40

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Solution

The fourth proportional to 457,284.60, 685,926.90 and 331,313.40 is: 496,970.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,284.60 : 685,926.90 = 331,313.40 : x
  2. Step 2: Convert to fraction form
    457,284.60/685,926.90 = 331,313.40/x
  3. Step 3: Cross multiply
    457,284.60x = 685,926.90 × 331,313.40
  4. Step 4: Simplify right side
    457,284.60x = 227,256,773,390.46
  5. Step 5: Solve for x
    x = 227,256,773,390.46/457,284.60
  6. Step 6: Final answer
    x = 496,970.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.