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Finding the Fourth Proportional to 457,283.60, 685,925.40 and 331,312.40

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Solution

The fourth proportional to 457,283.60, 685,925.40 and 331,312.40 is: 496,968.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,283.60 : 685,925.40 = 331,312.40 : x
  2. Step 2: Convert to fraction form
    457,283.60/685,925.40 = 331,312.40/x
  3. Step 3: Cross multiply
    457,283.60x = 685,925.40 × 331,312.40
  4. Step 4: Simplify right side
    457,283.60x = 227,255,590,494.96
  5. Step 5: Solve for x
    x = 227,255,590,494.96/457,283.60
  6. Step 6: Final answer
    x = 496,968.60

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Similar ratio
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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.