Home / 1,270,880.70-1,906,321.05-429,420.30

Finding the Fourth Proportional to 1,270,880.70, 1,906,321.05 and 429,420.30

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Solution

The fourth proportional to 1,270,880.70, 1,906,321.05 and 429,420.30 is: 644,130.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270,880.70 : 1,906,321.05 = 429,420.30 : x
  2. Step 2: Convert to fraction form
    1,270,880.70/1,906,321.05 = 429,420.30/x
  3. Step 3: Cross multiply
    1,270,880.70x = 1,906,321.05 × 429,420.30
  4. Step 4: Simplify right side
    1,270,880.70x = 818,612,957,187.32
  5. Step 5: Solve for x
    x = 818,612,957,187.32/1,270,880.70
  6. Step 6: Final answer
    x = 644,130.45

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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.