Home / 680,903,946.21-939,618,413.46-379,473,218.25

Finding the Fourth Proportional to 680,903,946.21, 939,618,413.46 and 379,473,218.25

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Solution

The fourth proportional to 680,903,946.21, 939,618,413.46 and 379,473,218.25 is: 523,656,861.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,903,946.21 : 939,618,413.46 = 379,473,218.25 : x
  2. Step 2: Convert to fraction form
    680,903,946.21/939,618,413.46 = 379,473,218.25/x
  3. Step 3: Cross multiply
    680,903,946.21x = 939,618,413.46 × 379,473,218.25
  4. Step 4: Simplify right side
    680,903,946.21x = 356,560,023,282,625,344
  5. Step 5: Solve for x
    x = 356,560,023,282,625,344/680,903,946.21
  6. Step 6: Final answer
    x = 523,656,861.25

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.