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Finding the Fourth Proportional to 886,908.60, 1,330,362.90 and 326,345.40

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Solution

The fourth proportional to 886,908.60, 1,330,362.90 and 326,345.40 is: 489,518.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,908.60 : 1,330,362.90 = 326,345.40 : x
  2. Step 2: Convert to fraction form
    886,908.60/1,330,362.90 = 326,345.40/x
  3. Step 3: Cross multiply
    886,908.60x = 1,330,362.90 × 326,345.40
  4. Step 4: Simplify right side
    886,908.60x = 434,157,812,745.66
  5. Step 5: Solve for x
    x = 434,157,812,745.66/886,908.60
  6. Step 6: Final answer
    x = 489,518.10

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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.