Home / 896,860,810.80-1,345,291,216.20-858,118,761.90

Finding the Fourth Proportional to 896,860,810.80, 1,345,291,216.20 and 858,118,761.90

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Solution

The fourth proportional to 896,860,810.80, 1,345,291,216.20 and 858,118,761.90 is: 1,287,178,142.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    896,860,810.80 : 1,345,291,216.20 = 858,118,761.90 : x
  2. Step 2: Convert to fraction form
    896,860,810.80/1,345,291,216.20 = 858,118,761.90/x
  3. Step 3: Cross multiply
    896,860,810.80x = 1,345,291,216.20 × 858,118,761.90
  4. Step 4: Simplify right side
    896,860,810.80x = 1,154,419,632,840,489,216
  5. Step 5: Solve for x
    x = 1,154,419,632,840,489,216/896,860,810.80
  6. Step 6: Final answer
    x = 1,287,178,142.85

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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.