Home / 646,240.80-968,972.40-331,312.80

Finding the Fourth Proportional to 646,240.80, 968,972.40 and 331,312.80

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Solution

The fourth proportional to 646,240.80, 968,972.40 and 331,312.80 is: 496,769.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,240.80 : 968,972.40 = 331,312.80 : x
  2. Step 2: Convert to fraction form
    646,240.80/968,972.40 = 331,312.80/x
  3. Step 3: Cross multiply
    646,240.80x = 968,972.40 × 331,312.80
  4. Step 4: Simplify right side
    646,240.80x = 321,032,958,966.72
  5. Step 5: Solve for x
    x = 321,032,958,966.72/646,240.80
  6. Step 6: Final answer
    x = 496,769.87

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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.