Home / 628,829.80-942,651.74-312,988.12

Finding the Fourth Proportional to 628,829.80, 942,651.74 and 312,988.12

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Solution

The fourth proportional to 628,829.80, 942,651.74 and 312,988.12 is: 469,187.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,829.80 : 942,651.74 = 312,988.12 : x
  2. Step 2: Convert to fraction form
    628,829.80/942,651.74 = 312,988.12/x
  3. Step 3: Cross multiply
    628,829.80x = 942,651.74 × 312,988.12
  4. Step 4: Simplify right side
    628,829.80x = 295,038,795,917.33
  5. Step 5: Solve for x
    x = 295,038,795,917.33/628,829.80
  6. Step 6: Final answer
    x = 469,187.05

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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.