Home / 5,172,479.90-7,138,243.72-2,880,640.58

Finding the Fourth Proportional to 5,172,479.90, 7,138,243.72 and 2,880,640.58

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Solution

The fourth proportional to 5,172,479.90, 7,138,243.72 and 2,880,640.58 is: 3,975,407.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172,479.90 : 7,138,243.72 = 2,880,640.58 : x
  2. Step 2: Convert to fraction form
    5,172,479.90/7,138,243.72 = 2,880,640.58/x
  3. Step 3: Cross multiply
    5,172,479.90x = 7,138,243.72 × 2,880,640.58
  4. Step 4: Simplify right side
    5,172,479.90x = 20,562,714,529,762.16
  5. Step 5: Solve for x
    x = 20,562,714,529,762.16/5,172,479.90
  6. Step 6: Final answer
    x = 3,975,407.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.