Home / 678,343.10-1,017,536.31-341,199.63

Finding the Fourth Proportional to 678,343.10, 1,017,536.31 and 341,199.63

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Solution

The fourth proportional to 678,343.10, 1,017,536.31 and 341,199.63 is: 511,810.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,343.10 : 1,017,536.31 = 341,199.63 : x
  2. Step 2: Convert to fraction form
    678,343.10/1,017,536.31 = 341,199.63/x
  3. Step 3: Cross multiply
    678,343.10x = 1,017,536.31 × 341,199.63
  4. Step 4: Simplify right side
    678,343.10x = 347,183,012,483.57
  5. Step 5: Solve for x
    x = 347,183,012,483.57/678,343.10
  6. Step 6: Final answer
    x = 511,810.34

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Double scale
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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.