Home / 631,904.58-872,023.89-345,425.35

Finding the Fourth Proportional to 631,904.58, 872,023.89 and 345,425.35

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Solution

The fourth proportional to 631,904.58, 872,023.89 and 345,425.35 is: 476,684.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,904.58 : 872,023.89 = 345,425.35 : x
  2. Step 2: Convert to fraction form
    631,904.58/872,023.89 = 345,425.35/x
  3. Step 3: Cross multiply
    631,904.58x = 872,023.89 × 345,425.35
  4. Step 4: Simplify right side
    631,904.58x = 301,219,157,411.61
  5. Step 5: Solve for x
    x = 301,219,157,411.61/631,904.58
  6. Step 6: Final answer
    x = 476,684.56

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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.