Home / 519,890.40-780,094.80-295,423.20

Finding the Fourth Proportional to 519,890.40, 780,094.80 and 295,423.20

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Solution

The fourth proportional to 519,890.40, 780,094.80 and 295,423.20 is: 443,282.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,890.40 : 780,094.80 = 295,423.20 : x
  2. Step 2: Convert to fraction form
    519,890.40/780,094.80 = 295,423.20/x
  3. Step 3: Cross multiply
    519,890.40x = 780,094.80 × 295,423.20
  4. Step 4: Simplify right side
    519,890.40x = 230,458,102,119.36
  5. Step 5: Solve for x
    x = 230,458,102,119.36/519,890.40
  6. Step 6: Final answer
    x = 443,282.09

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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.