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Finding the Fourth Proportional to 13,478,433.60, 20,217,650.40 and 13,478,433.60

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Solution

The fourth proportional to 13,478,433.60, 20,217,650.40 and 13,478,433.60 is: 20,217,650.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,478,433.60 : 20,217,650.40 = 13,478,433.60 : x
  2. Step 2: Convert to fraction form
    13,478,433.60/20,217,650.40 = 13,478,433.60/x
  3. Step 3: Cross multiply
    13,478,433.60x = 20,217,650.40 × 13,478,433.60
  4. Step 4: Simplify right side
    13,478,433.60x = 272,502,258,464,413.41
  5. Step 5: Solve for x
    x = 272,502,258,464,413.41/13,478,433.60
  6. Step 6: Final answer
    x = 20,217,650.40

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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.