Home / 869,620.47-1,200,088.62-525,408.54

Finding the Fourth Proportional to 869,620.47, 1,200,088.62 and 525,408.54

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Solution

The fourth proportional to 869,620.47, 1,200,088.62 and 525,408.54 is: 725,071.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,620.47 : 1,200,088.62 = 525,408.54 : x
  2. Step 2: Convert to fraction form
    869,620.47/1,200,088.62 = 525,408.54/x
  3. Step 3: Cross multiply
    869,620.47x = 1,200,088.62 × 525,408.54
  4. Step 4: Simplify right side
    869,620.47x = 630,536,809,704.82
  5. Step 5: Solve for x
    x = 630,536,809,704.82/869,620.47
  6. Step 6: Final answer
    x = 725,071.26

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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.