Home / 628,734.48-867,397.20-386,944.08

Finding the Fourth Proportional to 628,734.48, 867,397.20 and 386,944.08

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Solution

The fourth proportional to 628,734.48, 867,397.20 and 386,944.08 is: 533,825.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,734.48 : 867,397.20 = 386,944.08 : x
  2. Step 2: Convert to fraction form
    628,734.48/867,397.20 = 386,944.08/x
  3. Step 3: Cross multiply
    628,734.48x = 867,397.20 × 386,944.08
  4. Step 4: Simplify right side
    628,734.48x = 335,634,211,548.58
  5. Step 5: Solve for x
    x = 335,634,211,548.58/628,734.48
  6. Step 6: Final answer
    x = 533,825.04

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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.