Home / 720,928.55-1,081,500.34-265,484.76

Finding the Fourth Proportional to 720,928.55, 1,081,500.34 and 265,484.76

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Solution

The fourth proportional to 720,928.55, 1,081,500.34 and 265,484.76 is: 398,266.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,928.55 : 1,081,500.34 = 265,484.76 : x
  2. Step 2: Convert to fraction form
    720,928.55/1,081,500.34 = 265,484.76/x
  3. Step 3: Cross multiply
    720,928.55x = 1,081,500.34 × 265,484.76
  4. Step 4: Simplify right side
    720,928.55x = 287,121,857,541.11
  5. Step 5: Solve for x
    x = 287,121,857,541.11/720,928.55
  6. Step 6: Final answer
    x = 398,266.73

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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.