Home / 730,528.78-1,008,126.77-408,238.80

Finding the Fourth Proportional to 730,528.78, 1,008,126.77 and 408,238.80

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Solution

The fourth proportional to 730,528.78, 1,008,126.77 and 408,238.80 is: 563,367.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    730,528.78 : 1,008,126.77 = 408,238.80 : x
  2. Step 2: Convert to fraction form
    730,528.78/1,008,126.77 = 408,238.80/x
  3. Step 3: Cross multiply
    730,528.78x = 1,008,126.77 × 408,238.80
  4. Step 4: Simplify right side
    730,528.78x = 411,556,462,832.68
  5. Step 5: Solve for x
    x = 411,556,462,832.68/730,528.78
  6. Step 6: Final answer
    x = 563,367.90

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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.