Home / 628,930.34-867,912.63-342,445.22

Finding the Fourth Proportional to 628,930.34, 867,912.63 and 342,445.22

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Solution

The fourth proportional to 628,930.34, 867,912.63 and 342,445.22 is: 472,568.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,930.34 : 867,912.63 = 342,445.22 : x
  2. Step 2: Convert to fraction form
    628,930.34/867,912.63 = 342,445.22/x
  3. Step 3: Cross multiply
    628,930.34x = 867,912.63 × 342,445.22
  4. Step 4: Simplify right side
    628,930.34x = 297,212,531,521.13
  5. Step 5: Solve for x
    x = 297,212,531,521.13/628,930.34
  6. Step 6: Final answer
    x = 472,568.28

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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.