Home / 631,844.28-872,530.38-405,886.68

Finding the Fourth Proportional to 631,844.28, 872,530.38 and 405,886.68

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Solution

The fourth proportional to 631,844.28, 872,530.38 and 405,886.68 is: 560,499.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,844.28 : 872,530.38 = 405,886.68 : x
  2. Step 2: Convert to fraction form
    631,844.28/872,530.38 = 405,886.68/x
  3. Step 3: Cross multiply
    631,844.28x = 872,530.38 × 405,886.68
  4. Step 4: Simplify right side
    631,844.28x = 354,148,459,137.34
  5. Step 5: Solve for x
    x = 354,148,459,137.34/631,844.28
  6. Step 6: Final answer
    x = 560,499.59

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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.