Home / 1,308,479.42-1,962,718.52-409,991.78

Finding the Fourth Proportional to 1,308,479.42, 1,962,718.52 and 409,991.78

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Solution

The fourth proportional to 1,308,479.42, 1,962,718.52 and 409,991.78 is: 614,987.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308,479.42 : 1,962,718.52 = 409,991.78 : x
  2. Step 2: Convert to fraction form
    1,308,479.42/1,962,718.52 = 409,991.78/x
  3. Step 3: Cross multiply
    1,308,479.42x = 1,962,718.52 × 409,991.78
  4. Step 4: Simplify right side
    1,308,479.42x = 804,698,447,790.21
  5. Step 5: Solve for x
    x = 804,698,447,790.21/1,308,479.42
  6. Step 6: Final answer
    x = 614,987.47

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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.