Home / 919,155.36-1,378,770.12-320,177.10

Finding the Fourth Proportional to 919,155.36, 1,378,770.12 and 320,177.10

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Solution

The fourth proportional to 919,155.36, 1,378,770.12 and 320,177.10 is: 480,278.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,155.36 : 1,378,770.12 = 320,177.10 : x
  2. Step 2: Convert to fraction form
    919,155.36/1,378,770.12 = 320,177.10/x
  3. Step 3: Cross multiply
    919,155.36x = 1,378,770.12 × 320,177.10
  4. Step 4: Simplify right side
    919,155.36x = 441,450,618,588.25
  5. Step 5: Solve for x
    x = 441,450,618,588.25/919,155.36
  6. Step 6: Final answer
    x = 480,278.57

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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.