Home / 1,389,245.31-1,915,320.74-1,001,736.45

Finding the Fourth Proportional to 1,389,245.31, 1,915,320.74 and 1,001,736.45

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Solution

The fourth proportional to 1,389,245.31, 1,915,320.74 and 1,001,736.45 is: 1,381,071.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,245.31 : 1,915,320.74 = 1,001,736.45 : x
  2. Step 2: Convert to fraction form
    1,389,245.31/1,915,320.74 = 1,001,736.45/x
  3. Step 3: Cross multiply
    1,389,245.31x = 1,915,320.74 × 1,001,736.45
  4. Step 4: Simplify right side
    1,389,245.31x = 1,918,646,593,690.29
  5. Step 5: Solve for x
    x = 1,918,646,593,690.29/1,389,245.31
  6. Step 6: Final answer
    x = 1,381,071.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.