Home / 939,840.80-1,409,761.20-308,818.40

Finding the Fourth Proportional to 939,840.80, 1,409,761.20 and 308,818.40

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Solution

The fourth proportional to 939,840.80, 1,409,761.20 and 308,818.40 is: 463,227.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,840.80 : 1,409,761.20 = 308,818.40 : x
  2. Step 2: Convert to fraction form
    939,840.80/1,409,761.20 = 308,818.40/x
  3. Step 3: Cross multiply
    939,840.80x = 1,409,761.20 × 308,818.40
  4. Step 4: Simplify right side
    939,840.80x = 435,360,198,166.08
  5. Step 5: Solve for x
    x = 435,360,198,166.08/939,840.80
  6. Step 6: Final answer
    x = 463,227.60

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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.