Home / 810,614.40-1,212,422.40-684,643.20

Finding the Fourth Proportional to 810,614.40, 1,212,422.40 and 684,643.20

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Solution

The fourth proportional to 810,614.40, 1,212,422.40 and 684,643.20 is: 1,024,009.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,614.40 : 1,212,422.40 = 684,643.20 : x
  2. Step 2: Convert to fraction form
    810,614.40/1,212,422.40 = 684,643.20/x
  3. Step 3: Cross multiply
    810,614.40x = 1,212,422.40 × 684,643.20
  4. Step 4: Simplify right side
    810,614.40x = 830,076,751,687.68
  5. Step 5: Solve for x
    x = 830,076,751,687.68/810,614.40
  6. Step 6: Final answer
    x = 1,024,009.38

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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.