Home / 919,156.48-1,378,771.81-320,178.22

Finding the Fourth Proportional to 919,156.48, 1,378,771.81 and 320,178.22

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Solution

The fourth proportional to 919,156.48, 1,378,771.81 and 320,178.22 is: 480,280.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,156.48 : 1,378,771.81 = 320,178.22 : x
  2. Step 2: Convert to fraction form
    919,156.48/1,378,771.81 = 320,178.22/x
  3. Step 3: Cross multiply
    919,156.48x = 1,378,771.81 × 320,178.22
  4. Step 4: Simplify right side
    919,156.48x = 441,452,699,664.60
  5. Step 5: Solve for x
    x = 441,452,699,664.60/919,156.48
  6. Step 6: Final answer
    x = 480,280.25

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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.