Home / 1,187,039.93-1,780,809.03-388,259.10

Finding the Fourth Proportional to 1,187,039.93, 1,780,809.03 and 388,259.10

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Solution

The fourth proportional to 1,187,039.93, 1,780,809.03 and 388,259.10 is: 582,470.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,039.93 : 1,780,809.03 = 388,259.10 : x
  2. Step 2: Convert to fraction form
    1,187,039.93/1,780,809.03 = 388,259.10/x
  3. Step 3: Cross multiply
    1,187,039.93x = 1,780,809.03 × 388,259.10
  4. Step 4: Simplify right side
    1,187,039.93x = 691,415,311,259.67
  5. Step 5: Solve for x
    x = 691,415,311,259.67/1,187,039.93
  6. Step 6: Final answer
    x = 582,470.14

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Double scale
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1.5x scale

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.