Home / 638,427.20-955,797.60-389,595.20

Finding the Fourth Proportional to 638,427.20, 955,797.60 and 389,595.20

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Solution

The fourth proportional to 638,427.20, 955,797.60 and 389,595.20 is: 583,268.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,427.20 : 955,797.60 = 389,595.20 : x
  2. Step 2: Convert to fraction form
    638,427.20/955,797.60 = 389,595.20/x
  3. Step 3: Cross multiply
    638,427.20x = 955,797.60 × 389,595.20
  4. Step 4: Simplify right side
    638,427.20x = 372,374,157,131.52
  5. Step 5: Solve for x
    x = 372,374,157,131.52/638,427.20
  6. Step 6: Final answer
    x = 583,268.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.