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Finding the Fourth Proportional to 886,871.60, 1,330,307.40 and 326,308.40

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Solution

The fourth proportional to 886,871.60, 1,330,307.40 and 326,308.40 is: 489,462.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,871.60 : 1,330,307.40 = 326,308.40 : x
  2. Step 2: Convert to fraction form
    886,871.60/1,330,307.40 = 326,308.40/x
  3. Step 3: Cross multiply
    886,871.60x = 1,330,307.40 × 326,308.40
  4. Step 4: Simplify right side
    886,871.60x = 434,090,479,202.16
  5. Step 5: Solve for x
    x = 434,090,479,202.16/886,871.60
  6. Step 6: Final answer
    x = 489,462.60

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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.