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Finding the Fourth Proportional to 432,839.10, 649,258.65 and 401,346.30

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Solution

The fourth proportional to 432,839.10, 649,258.65 and 401,346.30 is: 602,019.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,839.10 : 649,258.65 = 401,346.30 : x
  2. Step 2: Convert to fraction form
    432,839.10/649,258.65 = 401,346.30/x
  3. Step 3: Cross multiply
    432,839.10x = 649,258.65 × 401,346.30
  4. Step 4: Simplify right side
    432,839.10x = 260,577,556,920.50
  5. Step 5: Solve for x
    x = 260,577,556,920.50/432,839.10
  6. Step 6: Final answer
    x = 602,019.45

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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.