Home / 1,255,486.40-1,880,464.80-1,115,403.20

Finding the Fourth Proportional to 1,255,486.40, 1,880,464.80 and 1,115,403.20

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Solution

The fourth proportional to 1,255,486.40, 1,880,464.80 and 1,115,403.20 is: 1,670,648.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,255,486.40 : 1,880,464.80 = 1,115,403.20 : x
  2. Step 2: Convert to fraction form
    1,255,486.40/1,880,464.80 = 1,115,403.20/x
  3. Step 3: Cross multiply
    1,255,486.40x = 1,880,464.80 × 1,115,403.20
  4. Step 4: Simplify right side
    1,255,486.40x = 2,097,476,455,407.36
  5. Step 5: Solve for x
    x = 2,097,476,455,407.36/1,255,486.40
  6. Step 6: Final answer
    x = 1,670,648.49

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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.