Home / 520,359.30-780,479.32-136,145.26

Finding the Fourth Proportional to 520,359.30, 780,479.32 and 136,145.26

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Solution

The fourth proportional to 520,359.30, 780,479.32 and 136,145.26 is: 204,202.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,359.30 : 780,479.32 = 136,145.26 : x
  2. Step 2: Convert to fraction form
    520,359.30/780,479.32 = 136,145.26/x
  3. Step 3: Cross multiply
    520,359.30x = 780,479.32 × 136,145.26
  4. Step 4: Simplify right side
    520,359.30x = 106,258,559,946.02
  5. Step 5: Solve for x
    x = 106,258,559,946.02/520,359.30
  6. Step 6: Final answer
    x = 204,202.29

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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.