Home / 6,385,431.60-9,578,147.40-3,991,978.80

Finding the Fourth Proportional to 6,385,431.60, 9,578,147.40 and 3,991,978.80

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Solution

The fourth proportional to 6,385,431.60, 9,578,147.40 and 3,991,978.80 is: 5,987,968.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,385,431.60 : 9,578,147.40 = 3,991,978.80 : x
  2. Step 2: Convert to fraction form
    6,385,431.60/9,578,147.40 = 3,991,978.80/x
  3. Step 3: Cross multiply
    6,385,431.60x = 9,578,147.40 × 3,991,978.80
  4. Step 4: Simplify right side
    6,385,431.60x = 38,235,761,364,075.12
  5. Step 5: Solve for x
    x = 38,235,761,364,075.12/6,385,431.60
  6. Step 6: Final answer
    x = 5,987,968.20

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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.