Home / 1,021,749.30-1,529,999.55-810,047.70

Finding the Fourth Proportional to 1,021,749.30, 1,529,999.55 and 810,047.70

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Solution

The fourth proportional to 1,021,749.30, 1,529,999.55 and 810,047.70 is: 1,212,990.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021,749.30 : 1,529,999.55 = 810,047.70 : x
  2. Step 2: Convert to fraction form
    1,021,749.30/1,529,999.55 = 810,047.70/x
  3. Step 3: Cross multiply
    1,021,749.30x = 1,529,999.55 × 810,047.70
  4. Step 4: Simplify right side
    1,021,749.30x = 1,239,372,616,478.53
  5. Step 5: Solve for x
    x = 1,239,372,616,478.53/1,021,749.30
  6. Step 6: Final answer
    x = 1,212,990.91

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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.