Home / 860,400.32-1,291,169.01-405,121.77

Finding the Fourth Proportional to 860,400.32, 1,291,169.01 and 405,121.77

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Solution

The fourth proportional to 860,400.32, 1,291,169.01 and 405,121.77 is: 607,950.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,400.32 : 1,291,169.01 = 405,121.77 : x
  2. Step 2: Convert to fraction form
    860,400.32/1,291,169.01 = 405,121.77/x
  3. Step 3: Cross multiply
    860,400.32x = 1,291,169.01 × 405,121.77
  4. Step 4: Simplify right side
    860,400.32x = 523,080,674,700.35
  5. Step 5: Solve for x
    x = 523,080,674,700.35/860,400.32
  6. Step 6: Final answer
    x = 607,950.35

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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.