Home / 765,798.10-1,056,764.48-421,626.87

Finding the Fourth Proportional to 765,798.10, 1,056,764.48 and 421,626.87

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Solution

The fourth proportional to 765,798.10, 1,056,764.48 and 421,626.87 is: 581,824.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,798.10 : 1,056,764.48 = 421,626.87 : x
  2. Step 2: Convert to fraction form
    765,798.10/1,056,764.48 = 421,626.87/x
  3. Step 3: Cross multiply
    765,798.10x = 1,056,764.48 × 421,626.87
  4. Step 4: Simplify right side
    765,798.10x = 445,560,297,921.44
  5. Step 5: Solve for x
    x = 445,560,297,921.44/765,798.10
  6. Step 6: Final answer
    x = 581,824.76

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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.