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Finding the Fourth Proportional to 631,930.30, 872,064.06 and 345,450.34

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Solution

The fourth proportional to 631,930.30, 872,064.06 and 345,450.34 is: 476,721.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,930.30 : 872,064.06 = 345,450.34 : x
  2. Step 2: Convert to fraction form
    631,930.30/872,064.06 = 345,450.34/x
  3. Step 3: Cross multiply
    631,930.30x = 872,064.06 × 345,450.34
  4. Step 4: Simplify right side
    631,930.30x = 301,254,826,028.78
  5. Step 5: Solve for x
    x = 301,254,826,028.78/631,930.30
  6. Step 6: Final answer
    x = 476,721.60

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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.