Home / 1,397,938.23-1,928,045.21-907,371.45

Finding the Fourth Proportional to 1,397,938.23, 1,928,045.21 and 907,371.45

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Solution

The fourth proportional to 1,397,938.23, 1,928,045.21 and 907,371.45 is: 1,251,452.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,397,938.23 : 1,928,045.21 = 907,371.45 : x
  2. Step 2: Convert to fraction form
    1,397,938.23/1,928,045.21 = 907,371.45/x
  3. Step 3: Cross multiply
    1,397,938.23x = 1,928,045.21 × 907,371.45
  4. Step 4: Simplify right side
    1,397,938.23x = 1,749,453,168,223.03
  5. Step 5: Solve for x
    x = 1,749,453,168,223.03/1,397,938.23
  6. Step 6: Final answer
    x = 1,251,452.42

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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.