Home / 818,841.51-1,228,642.71-313,235.36

Finding the Fourth Proportional to 818,841.51, 1,228,642.71 and 313,235.36

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Solution

The fourth proportional to 818,841.51, 1,228,642.71 and 313,235.36 is: 469,998.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,841.51 : 1,228,642.71 = 313,235.36 : x
  2. Step 2: Convert to fraction form
    818,841.51/1,228,642.71 = 313,235.36/x
  3. Step 3: Cross multiply
    818,841.51x = 1,228,642.71 × 313,235.36
  4. Step 4: Simplify right side
    818,841.51x = 384,854,340,629.74
  5. Step 5: Solve for x
    x = 384,854,340,629.74/818,841.51
  6. Step 6: Final answer
    x = 469,998.57

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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.