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Finding the Fourth Proportional to 390,615.72, 584,968.06 and 352,750.52

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Solution

The fourth proportional to 390,615.72, 584,968.06 and 352,750.52 is: 528,262.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,615.72 : 584,968.06 = 352,750.52 : x
  2. Step 2: Convert to fraction form
    390,615.72/584,968.06 = 352,750.52/x
  3. Step 3: Cross multiply
    390,615.72x = 584,968.06 × 352,750.52
  4. Step 4: Simplify right side
    390,615.72x = 206,347,787,348.39
  5. Step 5: Solve for x
    x = 206,347,787,348.39/390,615.72
  6. Step 6: Final answer
    x = 528,262.89

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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.