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Finding the Fourth Proportional to 860,794,855.05, 1,188,263,436.28 and 578,700,900.03

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Solution

The fourth proportional to 860,794,855.05, 1,188,263,436.28 and 578,700,900.03 is: 798,853,659.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,794,855.05 : 1,188,263,436.28 = 578,700,900.03 : x
  2. Step 2: Convert to fraction form
    860,794,855.05/1,188,263,436.28 = 578,700,900.03/x
  3. Step 3: Cross multiply
    860,794,855.05x = 1,188,263,436.28 × 578,700,900.03
  4. Step 4: Simplify right side
    860,794,855.05x = 687,649,120,047,976,448
  5. Step 5: Solve for x
    x = 687,649,120,047,976,448/860,794,855.05
  6. Step 6: Final answer
    x = 798,853,659.51

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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.