Home / 879,447.49-1,319,157.34-280,404.60

Finding the Fourth Proportional to 879,447.49, 1,319,157.34 and 280,404.60

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Solution

The fourth proportional to 879,447.49, 1,319,157.34 and 280,404.60 is: 420,602.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,447.49 : 1,319,157.34 = 280,404.60 : x
  2. Step 2: Convert to fraction form
    879,447.49/1,319,157.34 = 280,404.60/x
  3. Step 3: Cross multiply
    879,447.49x = 1,319,157.34 × 280,404.60
  4. Step 4: Simplify right side
    879,447.49x = 369,897,789,609.45
  5. Step 5: Solve for x
    x = 369,897,789,609.45/879,447.49
  6. Step 6: Final answer
    x = 420,602.47

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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.