Home / 825,666.80-1,238,500.20-510,738.80

Finding the Fourth Proportional to 825,666.80, 1,238,500.20 and 510,738.80

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Solution

The fourth proportional to 825,666.80, 1,238,500.20 and 510,738.80 is: 766,108.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,666.80 : 1,238,500.20 = 510,738.80 : x
  2. Step 2: Convert to fraction form
    825,666.80/1,238,500.20 = 510,738.80/x
  3. Step 3: Cross multiply
    825,666.80x = 1,238,500.20 × 510,738.80
  4. Step 4: Simplify right side
    825,666.80x = 632,550,105,947.76
  5. Step 5: Solve for x
    x = 632,550,105,947.76/825,666.80
  6. Step 6: Final answer
    x = 766,108.20

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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.