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Finding the Fourth Proportional to 647,359.80, 971,039.70 and 332,431.80

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Solution

The fourth proportional to 647,359.80, 971,039.70 and 332,431.80 is: 498,647.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,359.80 : 971,039.70 = 332,431.80 : x
  2. Step 2: Convert to fraction form
    647,359.80/971,039.70 = 332,431.80/x
  3. Step 3: Cross multiply
    647,359.80x = 971,039.70 × 332,431.80
  4. Step 4: Simplify right side
    647,359.80x = 322,804,475,342.46
  5. Step 5: Solve for x
    x = 322,804,475,342.46/647,359.80
  6. Step 6: Final answer
    x = 498,647.70

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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.