Home / 628,824.30-942,643.53-312,982.62

Finding the Fourth Proportional to 628,824.30, 942,643.53 and 312,982.62

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Solution

The fourth proportional to 628,824.30, 942,643.53 and 312,982.62 is: 469,178.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,824.30 : 942,643.53 = 312,982.62 : x
  2. Step 2: Convert to fraction form
    628,824.30/942,643.53 = 312,982.62/x
  3. Step 3: Cross multiply
    628,824.30x = 942,643.53 × 312,982.62
  4. Step 4: Simplify right side
    628,824.30x = 295,031,041,745.45
  5. Step 5: Solve for x
    x = 295,031,041,745.45/628,824.30
  6. Step 6: Final answer
    x = 469,178.82

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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.