Home / 639,030.42-881,837.64-397,257.54

Finding the Fourth Proportional to 639,030.42, 881,837.64 and 397,257.54

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Solution

The fourth proportional to 639,030.42, 881,837.64 and 397,257.54 is: 548,200.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,030.42 : 881,837.64 = 397,257.54 : x
  2. Step 2: Convert to fraction form
    639,030.42/881,837.64 = 397,257.54/x
  3. Step 3: Cross multiply
    639,030.42x = 881,837.64 × 397,257.54
  4. Step 4: Simplify right side
    639,030.42x = 350,316,651,545.81
  5. Step 5: Solve for x
    x = 350,316,651,545.81/639,030.42
  6. Step 6: Final answer
    x = 548,200.27

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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.