Home / 1,420,901.28-2,129,915.48-611,813.34

Finding the Fourth Proportional to 1,420,901.28, 2,129,915.48 and 611,813.34

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Solution

The fourth proportional to 1,420,901.28, 2,129,915.48 and 611,813.34 is: 917,101.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,901.28 : 2,129,915.48 = 611,813.34 : x
  2. Step 2: Convert to fraction form
    1,420,901.28/2,129,915.48 = 611,813.34/x
  3. Step 3: Cross multiply
    1,420,901.28x = 2,129,915.48 × 611,813.34
  4. Step 4: Simplify right side
    1,420,901.28x = 1,303,110,703,736.50
  5. Step 5: Solve for x
    x = 1,303,110,703,736.50/1,420,901.28
  6. Step 6: Final answer
    x = 917,101.51

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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.