Home / 1,137,965.21-1,707,202.05-427,999.40

Finding the Fourth Proportional to 1,137,965.21, 1,707,202.05 and 427,999.40

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Solution

The fourth proportional to 1,137,965.21, 1,707,202.05 and 427,999.40 is: 642,094.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,137,965.21 : 1,707,202.05 = 427,999.40 : x
  2. Step 2: Convert to fraction form
    1,137,965.21/1,707,202.05 = 427,999.40/x
  3. Step 3: Cross multiply
    1,137,965.21x = 1,707,202.05 × 427,999.40
  4. Step 4: Simplify right side
    1,137,965.21x = 730,681,453,078.77
  5. Step 5: Solve for x
    x = 730,681,453,078.77/1,137,965.21
  6. Step 6: Final answer
    x = 642,094.72

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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.