Home / 1,578,946,707.82-2,178,860,132.90-864,344,020.42

Finding the Fourth Proportional to 1,578,946,707.82, 2,178,860,132.90 and 864,344,020.42

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Solution

The fourth proportional to 1,578,946,707.82, 2,178,860,132.90 and 864,344,020.42 is: 1,192,747,492.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,578,946,707.82 : 2,178,860,132.90 = 864,344,020.42 : x
  2. Step 2: Convert to fraction form
    1,578,946,707.82/2,178,860,132.90 = 864,344,020.42/x
  3. Step 3: Cross multiply
    1,578,946,707.82x = 2,178,860,132.90 × 864,344,020.42
  4. Step 4: Simplify right side
    1,578,946,707.82x = 1,883,284,727,200,355,328
  5. Step 5: Solve for x
    x = 1,883,284,727,200,355,328/1,578,946,707.82
  6. Step 6: Final answer
    x = 1,192,747,492.92

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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.