Home / 628,823.80-942,642.78-312,982.12

Finding the Fourth Proportional to 628,823.80, 942,642.78 and 312,982.12

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Solution

The fourth proportional to 628,823.80, 942,642.78 and 312,982.12 is: 469,178.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,823.80 : 942,642.78 = 312,982.12 : x
  2. Step 2: Convert to fraction form
    628,823.80/942,642.78 = 312,982.12/x
  3. Step 3: Cross multiply
    628,823.80x = 942,642.78 × 312,982.12
  4. Step 4: Simplify right side
    628,823.80x = 295,030,335,687.09
  5. Step 5: Solve for x
    x = 295,030,335,687.09/628,823.80
  6. Step 6: Final answer
    x = 469,178.07

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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.