Home / 724,500.40-1,087,139.40-303,818.80

Finding the Fourth Proportional to 724,500.40, 1,087,139.40 and 303,818.80

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Solution

The fourth proportional to 724,500.40, 1,087,139.40 and 303,818.80 is: 455,891.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,500.40 : 1,087,139.40 = 303,818.80 : x
  2. Step 2: Convert to fraction form
    724,500.40/1,087,139.40 = 303,818.80/x
  3. Step 3: Cross multiply
    724,500.40x = 1,087,139.40 × 303,818.80
  4. Step 4: Simplify right side
    724,500.40x = 330,293,387,940.72
  5. Step 5: Solve for x
    x = 330,293,387,940.72/724,500.40
  6. Step 6: Final answer
    x = 455,891.24

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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.