Home / 628,556.28-867,390.96-342,070.20

Finding the Fourth Proportional to 628,556.28, 867,390.96 and 342,070.20

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Solution

The fourth proportional to 628,556.28, 867,390.96 and 342,070.20 is: 472,047.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,556.28 : 867,390.96 = 342,070.20 : x
  2. Step 2: Convert to fraction form
    628,556.28/867,390.96 = 342,070.20/x
  3. Step 3: Cross multiply
    628,556.28x = 867,390.96 × 342,070.20
  4. Step 4: Simplify right side
    628,556.28x = 296,708,599,165.39
  5. Step 5: Solve for x
    x = 296,708,599,165.39/628,556.28
  6. Step 6: Final answer
    x = 472,047.78

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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.