Home / 826,142.40-1,239,342.72-352,830.24

Finding the Fourth Proportional to 826,142.40, 1,239,342.72 and 352,830.24

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Solution

The fourth proportional to 826,142.40, 1,239,342.72 and 352,830.24 is: 529,300.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,142.40 : 1,239,342.72 = 352,830.24 : x
  2. Step 2: Convert to fraction form
    826,142.40/1,239,342.72 = 352,830.24/x
  3. Step 3: Cross multiply
    826,142.40x = 1,239,342.72 × 352,830.24
  4. Step 4: Simplify right side
    826,142.40x = 437,277,589,339.85
  5. Step 5: Solve for x
    x = 437,277,589,339.85/826,142.40
  6. Step 6: Final answer
    x = 529,300.50

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Double scale
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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.