Home / 1,188,011.16-1,782,199.80-389,100.06

Finding the Fourth Proportional to 1,188,011.16, 1,782,199.80 and 389,100.06

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Solution

The fourth proportional to 1,188,011.16, 1,782,199.80 and 389,100.06 is: 583,710.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,011.16 : 1,782,199.80 = 389,100.06 : x
  2. Step 2: Convert to fraction form
    1,188,011.16/1,782,199.80 = 389,100.06/x
  3. Step 3: Cross multiply
    1,188,011.16x = 1,782,199.80 × 389,100.06
  4. Step 4: Simplify right side
    1,188,011.16x = 693,454,049,111.99
  5. Step 5: Solve for x
    x = 693,454,049,111.99/1,188,011.16
  6. Step 6: Final answer
    x = 583,710.05

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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.