Home / 1,379,427.20-2,069,205.60-432,828.80

Finding the Fourth Proportional to 1,379,427.20, 2,069,205.60 and 432,828.80

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Solution

The fourth proportional to 1,379,427.20, 2,069,205.60 and 432,828.80 is: 649,263.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,379,427.20 : 2,069,205.60 = 432,828.80 : x
  2. Step 2: Convert to fraction form
    1,379,427.20/2,069,205.60 = 432,828.80/x
  3. Step 3: Cross multiply
    1,379,427.20x = 2,069,205.60 × 432,828.80
  4. Step 4: Simplify right side
    1,379,427.20x = 895,611,776,801.28
  5. Step 5: Solve for x
    x = 895,611,776,801.28/1,379,427.20
  6. Step 6: Final answer
    x = 649,263.53

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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.