Home / 1,128,480.72-1,693,012.68-418,711.20

Finding the Fourth Proportional to 1,128,480.72, 1,693,012.68 and 418,711.20

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Solution

The fourth proportional to 1,128,480.72, 1,693,012.68 and 418,711.20 is: 628,175.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,480.72 : 1,693,012.68 = 418,711.20 : x
  2. Step 2: Convert to fraction form
    1,128,480.72/1,693,012.68 = 418,711.20/x
  3. Step 3: Cross multiply
    1,128,480.72x = 1,693,012.68 × 418,711.20
  4. Step 4: Simplify right side
    1,128,480.72x = 708,883,370,858.02
  5. Step 5: Solve for x
    x = 708,883,370,858.02/1,128,480.72
  6. Step 6: Final answer
    x = 628,175.00

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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.