Home / 919,314.96-1,378,631.16-320,122.32

Finding the Fourth Proportional to 919,314.96, 1,378,631.16 and 320,122.32

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Solution

The fourth proportional to 919,314.96, 1,378,631.16 and 320,122.32 is: 480,064.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,314.96 : 1,378,631.16 = 320,122.32 : x
  2. Step 2: Convert to fraction form
    919,314.96/1,378,631.16 = 320,122.32/x
  3. Step 3: Cross multiply
    919,314.96x = 1,378,631.16 × 320,122.32
  4. Step 4: Simplify right side
    919,314.96x = 441,330,605,363.49
  5. Step 5: Solve for x
    x = 441,330,605,363.49/919,314.96
  6. Step 6: Final answer
    x = 480,064.64

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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.