Home / 639,447.06-882,436.81-352,967.07

Finding the Fourth Proportional to 639,447.06, 882,436.81 and 352,967.07

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Solution

The fourth proportional to 639,447.06, 882,436.81 and 352,967.07 is: 487,094.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,447.06 : 882,436.81 = 352,967.07 : x
  2. Step 2: Convert to fraction form
    639,447.06/882,436.81 = 352,967.07/x
  3. Step 3: Cross multiply
    639,447.06x = 882,436.81 × 352,967.07
  4. Step 4: Simplify right side
    639,447.06x = 311,471,132,417.95
  5. Step 5: Solve for x
    x = 311,471,132,417.95/639,447.06
  6. Step 6: Final answer
    x = 487,094.48

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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.