Home / 1,249,876.80-1,874,912.34-408,513.60

Finding the Fourth Proportional to 1,249,876.80, 1,874,912.34 and 408,513.60

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Solution

The fourth proportional to 1,249,876.80, 1,874,912.34 and 408,513.60 is: 612,802.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249,876.80 : 1,874,912.34 = 408,513.60 : x
  2. Step 2: Convert to fraction form
    1,249,876.80/1,874,912.34 = 408,513.60/x
  3. Step 3: Cross multiply
    1,249,876.80x = 1,874,912.34 × 408,513.60
  4. Step 4: Simplify right side
    1,249,876.80x = 765,927,189,697.82
  5. Step 5: Solve for x
    x = 765,927,189,697.82/1,249,876.80
  6. Step 6: Final answer
    x = 612,802.15

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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.