Home / 2,919,421.80-4,379,132.70-2,116,938.60

Finding the Fourth Proportional to 2,919,421.80, 4,379,132.70 and 2,116,938.60

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Solution

The fourth proportional to 2,919,421.80, 4,379,132.70 and 2,116,938.60 is: 3,175,407.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919,421.80 : 4,379,132.70 = 2,116,938.60 : x
  2. Step 2: Convert to fraction form
    2,919,421.80/4,379,132.70 = 2,116,938.60/x
  3. Step 3: Cross multiply
    2,919,421.80x = 4,379,132.70 × 2,116,938.60
  4. Step 4: Simplify right side
    2,919,421.80x = 9,270,355,047,152.22
  5. Step 5: Solve for x
    x = 9,270,355,047,152.22/2,919,421.80
  6. Step 6: Final answer
    x = 3,175,407.90

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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.