Home / 721,378.50-995,548.41-403,426.50

Finding the Fourth Proportional to 721,378.50, 995,548.41 and 403,426.50

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Solution

The fourth proportional to 721,378.50, 995,548.41 and 403,426.50 is: 556,754.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,378.50 : 995,548.41 = 403,426.50 : x
  2. Step 2: Convert to fraction form
    721,378.50/995,548.41 = 403,426.50/x
  3. Step 3: Cross multiply
    721,378.50x = 995,548.41 × 403,426.50
  4. Step 4: Simplify right side
    721,378.50x = 401,630,610,626.87
  5. Step 5: Solve for x
    x = 401,630,610,626.87/721,378.50
  6. Step 6: Final answer
    x = 556,754.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.