Home / 525,071-787,647.90-258,686.18

Finding the Fourth Proportional to 525,071, 787,647.90 and 258,686.18

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Solution

The fourth proportional to 525,071, 787,647.90 and 258,686.18 is: 388,049.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,071 : 787,647.90 = 258,686.18 : x
  2. Step 2: Convert to fraction form
    525,071/787,647.90 = 258,686.18/x
  3. Step 3: Cross multiply
    525,071x = 787,647.90 × 258,686.18
  4. Step 4: Simplify right side
    525,071x = 203,753,626,436.02
  5. Step 5: Solve for x
    x = 203,753,626,436.02/525,071
  6. Step 6: Final answer
    x = 388,049.67

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1.5x scale

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.