Home / 1,320,088.38-1,821,409.74-747,128.54

Finding the Fourth Proportional to 1,320,088.38, 1,821,409.74 and 747,128.54

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Solution

The fourth proportional to 1,320,088.38, 1,821,409.74 and 747,128.54 is: 1,030,860.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,088.38 : 1,821,409.74 = 747,128.54 : x
  2. Step 2: Convert to fraction form
    1,320,088.38/1,821,409.74 = 747,128.54/x
  3. Step 3: Cross multiply
    1,320,088.38x = 1,821,409.74 × 747,128.54
  4. Step 4: Simplify right side
    1,320,088.38x = 1,360,827,199,787.98
  5. Step 5: Solve for x
    x = 1,360,827,199,787.98/1,320,088.38
  6. Step 6: Final answer
    x = 1,030,860.68

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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.