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Finding the Fourth Proportional to 504,200.70, 756,301.05 and 390,039.30

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Solution

The fourth proportional to 504,200.70, 756,301.05 and 390,039.30 is: 585,058.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,200.70 : 756,301.05 = 390,039.30 : x
  2. Step 2: Convert to fraction form
    504,200.70/756,301.05 = 390,039.30/x
  3. Step 3: Cross multiply
    504,200.70x = 756,301.05 × 390,039.30
  4. Step 4: Simplify right side
    504,200.70x = 294,987,132,131.27
  5. Step 5: Solve for x
    x = 294,987,132,131.27/504,200.70
  6. Step 6: Final answer
    x = 585,058.95

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Similar ratio
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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.