Home / 1,985,042.19-2,977,858.53-920,191.89

Finding the Fourth Proportional to 1,985,042.19, 2,977,858.53 and 920,191.89

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Solution

The fourth proportional to 1,985,042.19, 2,977,858.53 and 920,191.89 is: 1,380,424.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985,042.19 : 2,977,858.53 = 920,191.89 : x
  2. Step 2: Convert to fraction form
    1,985,042.19/2,977,858.53 = 920,191.89/x
  3. Step 3: Cross multiply
    1,985,042.19x = 2,977,858.53 × 920,191.89
  4. Step 4: Simplify right side
    1,985,042.19x = 2,740,201,268,873.32
  5. Step 5: Solve for x
    x = 2,740,201,268,873.32/1,985,042.19
  6. Step 6: Final answer
    x = 1,380,424.70

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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.