Home / 639,090.48-881,947.68-352,610.40

Finding the Fourth Proportional to 639,090.48, 881,947.68 and 352,610.40

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Solution

The fourth proportional to 639,090.48, 881,947.68 and 352,610.40 is: 486,603.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,090.48 : 881,947.68 = 352,610.40 : x
  2. Step 2: Convert to fraction form
    639,090.48/881,947.68 = 352,610.40/x
  3. Step 3: Cross multiply
    639,090.48x = 881,947.68 × 352,610.40
  4. Step 4: Simplify right side
    639,090.48x = 310,983,924,223.87
  5. Step 5: Solve for x
    x = 310,983,924,223.87/639,090.48
  6. Step 6: Final answer
    x = 486,603.91

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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.