Home / 999,279.45-1,379,455.98-637,190.01

Finding the Fourth Proportional to 999,279.45, 1,379,455.98 and 637,190.01

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Solution

The fourth proportional to 999,279.45, 1,379,455.98 and 637,190.01 is: 879,609.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,279.45 : 1,379,455.98 = 637,190.01 : x
  2. Step 2: Convert to fraction form
    999,279.45/1,379,455.98 = 637,190.01/x
  3. Step 3: Cross multiply
    999,279.45x = 1,379,455.98 × 637,190.01
  4. Step 4: Simplify right side
    999,279.45x = 878,975,559,607.53
  5. Step 5: Solve for x
    x = 878,975,559,607.53/999,279.45
  6. Step 6: Final answer
    x = 879,609.37

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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.