Home / 919,604.32-1,379,535.81-320,479.45

Finding the Fourth Proportional to 919,604.32, 1,379,535.81 and 320,479.45

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Solution

The fourth proportional to 919,604.32, 1,379,535.81 and 320,479.45 is: 480,764.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,604.32 : 1,379,535.81 = 320,479.45 : x
  2. Step 2: Convert to fraction form
    919,604.32/1,379,535.81 = 320,479.45/x
  3. Step 3: Cross multiply
    919,604.32x = 1,379,535.81 × 320,479.45
  4. Step 4: Simplify right side
    919,604.32x = 442,112,877,644.11
  5. Step 5: Solve for x
    x = 442,112,877,644.11/919,604.32
  6. Step 6: Final answer
    x = 480,764.25

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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.