Home / 628,293-867,345.48-386,782.59

Finding the Fourth Proportional to 628,293, 867,345.48 and 386,782.59

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Solution

The fourth proportional to 628,293, 867,345.48 and 386,782.59 is: 533,945.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,293 : 867,345.48 = 386,782.59 : x
  2. Step 2: Convert to fraction form
    628,293/867,345.48 = 386,782.59/x
  3. Step 3: Cross multiply
    628,293x = 867,345.48 × 386,782.59
  4. Step 4: Simplify right side
    628,293x = 335,474,131,179.19
  5. Step 5: Solve for x
    x = 335,474,131,179.19/628,293
  6. Step 6: Final answer
    x = 533,945.36

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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.