Home / 851,390.64-1,174,968.72-488,815.20

Finding the Fourth Proportional to 851,390.64, 1,174,968.72 and 488,815.20

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Solution

The fourth proportional to 851,390.64, 1,174,968.72 and 488,815.20 is: 674,593.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,390.64 : 1,174,968.72 = 488,815.20 : x
  2. Step 2: Convert to fraction form
    851,390.64/1,174,968.72 = 488,815.20/x
  3. Step 3: Cross multiply
    851,390.64x = 1,174,968.72 × 488,815.20
  4. Step 4: Simplify right side
    851,390.64x = 574,342,569,860.54
  5. Step 5: Solve for x
    x = 574,342,569,860.54/851,390.64
  6. Step 6: Final answer
    x = 674,593.47

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1.5x scale

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.