Home / 679,638.11-1,019,403.81-395,147.34

Finding the Fourth Proportional to 679,638.11, 1,019,403.81 and 395,147.34

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Solution

The fourth proportional to 679,638.11, 1,019,403.81 and 395,147.34 is: 592,689.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,638.11 : 1,019,403.81 = 395,147.34 : x
  2. Step 2: Convert to fraction form
    679,638.11/1,019,403.81 = 395,147.34/x
  3. Step 3: Cross multiply
    679,638.11x = 1,019,403.81 × 395,147.34
  4. Step 4: Simplify right side
    679,638.11x = 402,814,703,907.37
  5. Step 5: Solve for x
    x = 402,814,703,907.37/679,638.11
  6. Step 6: Final answer
    x = 592,689.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.