Home / 1,278,373.10-1,915,732.69-938,749.41

Finding the Fourth Proportional to 1,278,373.10, 1,915,732.69 and 938,749.41

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Solution

The fourth proportional to 1,278,373.10, 1,915,732.69 and 938,749.41 is: 1,406,782.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,373.10 : 1,915,732.69 = 938,749.41 : x
  2. Step 2: Convert to fraction form
    1,278,373.10/1,915,732.69 = 938,749.41/x
  3. Step 3: Cross multiply
    1,278,373.10x = 1,915,732.69 × 938,749.41
  4. Step 4: Simplify right side
    1,278,373.10x = 1,798,392,930,108.34
  5. Step 5: Solve for x
    x = 1,798,392,930,108.34/1,278,373.10
  6. Step 6: Final answer
    x = 1,406,782.52

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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.