Home / 1,389,597.96-1,916,122.38-905,264.94

Finding the Fourth Proportional to 1,389,597.96, 1,916,122.38 and 905,264.94

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Solution

The fourth proportional to 1,389,597.96, 1,916,122.38 and 905,264.94 is: 1,248,273.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,597.96 : 1,916,122.38 = 905,264.94 : x
  2. Step 2: Convert to fraction form
    1,389,597.96/1,916,122.38 = 905,264.94/x
  3. Step 3: Cross multiply
    1,389,597.96x = 1,916,122.38 × 905,264.94
  4. Step 4: Simplify right side
    1,389,597.96x = 1,734,598,415,154.07
  5. Step 5: Solve for x
    x = 1,734,598,415,154.07/1,389,597.96
  6. Step 6: Final answer
    x = 1,248,273.57

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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.