Home / 812,724.04-1,219,200.36-339,301.72

Finding the Fourth Proportional to 812,724.04, 1,219,200.36 and 339,301.72

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Solution

The fourth proportional to 812,724.04, 1,219,200.36 and 339,301.72 is: 509,000.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,724.04 : 1,219,200.36 = 339,301.72 : x
  2. Step 2: Convert to fraction form
    812,724.04/1,219,200.36 = 339,301.72/x
  3. Step 3: Cross multiply
    812,724.04x = 1,219,200.36 × 339,301.72
  4. Step 4: Simplify right side
    812,724.04x = 413,676,779,172.62
  5. Step 5: Solve for x
    x = 413,676,779,172.62/812,724.04
  6. Step 6: Final answer
    x = 509,000.30

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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.