Home / 730,457.64-1,008,131.66-420,353.85

Finding the Fourth Proportional to 730,457.64, 1,008,131.66 and 420,353.85

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Solution

The fourth proportional to 730,457.64, 1,008,131.66 and 420,353.85 is: 580,145.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    730,457.64 : 1,008,131.66 = 420,353.85 : x
  2. Step 2: Convert to fraction form
    730,457.64/1,008,131.66 = 420,353.85/x
  3. Step 3: Cross multiply
    730,457.64x = 1,008,131.66 × 420,353.85
  4. Step 4: Simplify right side
    730,457.64x = 423,772,020,519.08
  5. Step 5: Solve for x
    x = 423,772,020,519.08/730,457.64
  6. Step 6: Final answer
    x = 580,145.92

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Double scale
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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.