Home / 1,121,238.45-1,681,798.90-322,488.64

Finding the Fourth Proportional to 1,121,238.45, 1,681,798.90 and 322,488.64

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Solution

The fourth proportional to 1,121,238.45, 1,681,798.90 and 322,488.64 is: 483,716.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,238.45 : 1,681,798.90 = 322,488.64 : x
  2. Step 2: Convert to fraction form
    1,121,238.45/1,681,798.90 = 322,488.64/x
  3. Step 3: Cross multiply
    1,121,238.45x = 1,681,798.90 × 322,488.64
  4. Step 4: Simplify right side
    1,121,238.45x = 542,361,041,915.19
  5. Step 5: Solve for x
    x = 542,361,041,915.19/1,121,238.45
  6. Step 6: Final answer
    x = 483,716.06

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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.