Home / 915,449.12-1,372,836.60-316,256.48

Finding the Fourth Proportional to 915,449.12, 1,372,836.60 and 316,256.48

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Solution

The fourth proportional to 915,449.12, 1,372,836.60 and 316,256.48 is: 474,268.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,449.12 : 1,372,836.60 = 316,256.48 : x
  2. Step 2: Convert to fraction form
    915,449.12/1,372,836.60 = 316,256.48/x
  3. Step 3: Cross multiply
    915,449.12x = 1,372,836.60 × 316,256.48
  4. Step 4: Simplify right side
    915,449.12x = 434,168,470,731.17
  5. Step 5: Solve for x
    x = 434,168,470,731.17/915,449.12
  6. Step 6: Final answer
    x = 474,268.27

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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.