Home / 1,278,477.40-1,916,368.04-425,321.20

Finding the Fourth Proportional to 1,278,477.40, 1,916,368.04 and 425,321.20

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Solution

The fourth proportional to 1,278,477.40, 1,916,368.04 and 425,321.20 is: 637,533.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,477.40 : 1,916,368.04 = 425,321.20 : x
  2. Step 2: Convert to fraction form
    1,278,477.40/1,916,368.04 = 425,321.20/x
  3. Step 3: Cross multiply
    1,278,477.40x = 1,916,368.04 × 425,321.20
  4. Step 4: Simplify right side
    1,278,477.40x = 815,071,954,414.45
  5. Step 5: Solve for x
    x = 815,071,954,414.45/1,278,477.40
  6. Step 6: Final answer
    x = 637,533.33

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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.