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Finding the Fourth Proportional to 607,520.20, 909,968.10 and 326,709.40

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Solution

The fourth proportional to 607,520.20, 909,968.10 and 326,709.40 is: 489,358.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,520.20 : 909,968.10 = 326,709.40 : x
  2. Step 2: Convert to fraction form
    607,520.20/909,968.10 = 326,709.40/x
  3. Step 3: Cross multiply
    607,520.20x = 909,968.10 × 326,709.40
  4. Step 4: Simplify right side
    607,520.20x = 297,295,131,970.14
  5. Step 5: Solve for x
    x = 297,295,131,970.14/607,520.20
  6. Step 6: Final answer
    x = 489,358.43

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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.