Home / 765,923.25-1,056,965.18-421,752.03

Finding the Fourth Proportional to 765,923.25, 1,056,965.18 and 421,752.03

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Solution

The fourth proportional to 765,923.25, 1,056,965.18 and 421,752.03 is: 582,012.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,923.25 : 1,056,965.18 = 421,752.03 : x
  2. Step 2: Convert to fraction form
    765,923.25/1,056,965.18 = 421,752.03/x
  3. Step 3: Cross multiply
    765,923.25x = 1,056,965.18 × 421,752.03
  4. Step 4: Simplify right side
    765,923.25x = 445,777,210,304.32
  5. Step 5: Solve for x
    x = 445,777,210,304.32/765,923.25
  6. Step 6: Final answer
    x = 582,012.90

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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.