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Finding the Fourth Proportional to 432,830.90, 649,246.35 and 426,610.10

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Solution

The fourth proportional to 432,830.90, 649,246.35 and 426,610.10 is: 639,915.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,830.90 : 649,246.35 = 426,610.10 : x
  2. Step 2: Convert to fraction form
    432,830.90/649,246.35 = 426,610.10/x
  3. Step 3: Cross multiply
    432,830.90x = 649,246.35 × 426,610.10
  4. Step 4: Simplify right side
    432,830.90x = 276,975,050,298.14
  5. Step 5: Solve for x
    x = 276,975,050,298.14/432,830.90
  6. Step 6: Final answer
    x = 639,915.15

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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.