Home / 1,189,003.60-1,783,721.40-390,062.80

Finding the Fourth Proportional to 1,189,003.60, 1,783,721.40 and 390,062.80

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Solution

The fourth proportional to 1,189,003.60, 1,783,721.40 and 390,062.80 is: 585,165.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,003.60 : 1,783,721.40 = 390,062.80 : x
  2. Step 2: Convert to fraction form
    1,189,003.60/1,783,721.40 = 390,062.80/x
  3. Step 3: Cross multiply
    1,189,003.60x = 1,783,721.40 × 390,062.80
  4. Step 4: Simplify right side
    1,189,003.60x = 695,763,363,703.92
  5. Step 5: Solve for x
    x = 695,763,363,703.92/1,189,003.60
  6. Step 6: Final answer
    x = 585,165.06

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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.