Home / 628,435.15-867,330.23-352,822.12

Finding the Fourth Proportional to 628,435.15, 867,330.23 and 352,822.12

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Solution

The fourth proportional to 628,435.15, 867,330.23 and 352,822.12 is: 486,944.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,435.15 : 867,330.23 = 352,822.12 : x
  2. Step 2: Convert to fraction form
    628,435.15/867,330.23 = 352,822.12/x
  3. Step 3: Cross multiply
    628,435.15x = 867,330.23 × 352,822.12
  4. Step 4: Simplify right side
    628,435.15x = 306,013,286,556.25
  5. Step 5: Solve for x
    x = 306,013,286,556.25/628,435.15
  6. Step 6: Final answer
    x = 486,944.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.