Home / 543,620.20-815,430.30-508,628.20

Finding the Fourth Proportional to 543,620.20, 815,430.30 and 508,628.20

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Solution

The fourth proportional to 543,620.20, 815,430.30 and 508,628.20 is: 762,942.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,620.20 : 815,430.30 = 508,628.20 : x
  2. Step 2: Convert to fraction form
    543,620.20/815,430.30 = 508,628.20/x
  3. Step 3: Cross multiply
    543,620.20x = 815,430.30 × 508,628.20
  4. Step 4: Simplify right side
    543,620.20x = 414,750,845,714.46
  5. Step 5: Solve for x
    x = 414,750,845,714.46/543,620.20
  6. Step 6: Final answer
    x = 762,942.30

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Double scale
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Similar ratio
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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.