Home / 947,399.60-1,420,408.20-386,145.20

Finding the Fourth Proportional to 947,399.60, 1,420,408.20 and 386,145.20

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Solution

The fourth proportional to 947,399.60, 1,420,408.20 and 386,145.20 is: 578,936.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    947,399.60 : 1,420,408.20 = 386,145.20 : x
  2. Step 2: Convert to fraction form
    947,399.60/1,420,408.20 = 386,145.20/x
  3. Step 3: Cross multiply
    947,399.60x = 1,420,408.20 × 386,145.20
  4. Step 4: Simplify right side
    947,399.60x = 548,483,808,470.64
  5. Step 5: Solve for x
    x = 548,483,808,470.64/947,399.60
  6. Step 6: Final answer
    x = 578,936.08

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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.