Home / 2,989,681.38-4,477,779.36-1,388,876.22

Finding the Fourth Proportional to 2,989,681.38, 4,477,779.36 and 1,388,876.22

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Solution

The fourth proportional to 2,989,681.38, 4,477,779.36 and 1,388,876.22 is: 2,080,181.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989,681.38 : 4,477,779.36 = 1,388,876.22 : x
  2. Step 2: Convert to fraction form
    2,989,681.38/4,477,779.36 = 1,388,876.22/x
  3. Step 3: Cross multiply
    2,989,681.38x = 4,477,779.36 × 1,388,876.22
  4. Step 4: Simplify right side
    2,989,681.38x = 6,219,081,271,510.82
  5. Step 5: Solve for x
    x = 6,219,081,271,510.82/2,989,681.38
  6. Step 6: Final answer
    x = 2,080,181.96

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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.