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Finding the Fourth Proportional to 489,380.40, 734,070.60 and 489,380.40

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Solution

The fourth proportional to 489,380.40, 734,070.60 and 489,380.40 is: 734,070.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,380.40 : 734,070.60 = 489,380.40 : x
  2. Step 2: Convert to fraction form
    489,380.40/734,070.60 = 489,380.40/x
  3. Step 3: Cross multiply
    489,380.40x = 734,070.60 × 489,380.40
  4. Step 4: Simplify right side
    489,380.40x = 359,239,763,856.24
  5. Step 5: Solve for x
    x = 359,239,763,856.24/489,380.40
  6. Step 6: Final answer
    x = 734,070.60

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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.