Home / 855,619.40-1,283,429.10-810,000.20

Finding the Fourth Proportional to 855,619.40, 1,283,429.10 and 810,000.20

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Solution

The fourth proportional to 855,619.40, 1,283,429.10 and 810,000.20 is: 1,215,000.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,619.40 : 1,283,429.10 = 810,000.20 : x
  2. Step 2: Convert to fraction form
    855,619.40/1,283,429.10 = 810,000.20/x
  3. Step 3: Cross multiply
    855,619.40x = 1,283,429.10 × 810,000.20
  4. Step 4: Simplify right side
    855,619.40x = 1,039,577,827,685.82
  5. Step 5: Solve for x
    x = 1,039,577,827,685.82/855,619.40
  6. Step 6: Final answer
    x = 1,215,000.30

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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.