Home / 4,261,128.40-6,391,692.60-1,421,333.20

Finding the Fourth Proportional to 4,261,128.40, 6,391,692.60 and 1,421,333.20

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Solution

The fourth proportional to 4,261,128.40, 6,391,692.60 and 1,421,333.20 is: 2,131,999.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,261,128.40 : 6,391,692.60 = 1,421,333.20 : x
  2. Step 2: Convert to fraction form
    4,261,128.40/6,391,692.60 = 1,421,333.20/x
  3. Step 3: Cross multiply
    4,261,128.40x = 6,391,692.60 × 1,421,333.20
  4. Step 4: Simplify right side
    4,261,128.40x = 9,084,724,896,574.32
  5. Step 5: Solve for x
    x = 9,084,724,896,574.32/4,261,128.40
  6. Step 6: Final answer
    x = 2,131,999.80

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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.