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Finding the Fourth Proportional to 868,153,609.20, 1,302,230,413.80 and 801,640,815.60

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Solution

The fourth proportional to 868,153,609.20, 1,302,230,413.80 and 801,640,815.60 is: 1,202,461,223.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,153,609.20 : 1,302,230,413.80 = 801,640,815.60 : x
  2. Step 2: Convert to fraction form
    868,153,609.20/1,302,230,413.80 = 801,640,815.60/x
  3. Step 3: Cross multiply
    868,153,609.20x = 1,302,230,413.80 × 801,640,815.60
  4. Step 4: Simplify right side
    868,153,609.20x = 1,043,921,051,017,757,440
  5. Step 5: Solve for x
    x = 1,043,921,051,017,757,440/868,153,609.20
  6. Step 6: Final answer
    x = 1,202,461,223.40

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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.