Home / 858,415.80-1,287,111.70-526,230.20

Finding the Fourth Proportional to 858,415.80, 1,287,111.70 and 526,230.20

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Solution

The fourth proportional to 858,415.80, 1,287,111.70 and 526,230.20 is: 789,031.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,415.80 : 1,287,111.70 = 526,230.20 : x
  2. Step 2: Convert to fraction form
    858,415.80/1,287,111.70 = 526,230.20/x
  3. Step 3: Cross multiply
    858,415.80x = 1,287,111.70 × 526,230.20
  4. Step 4: Simplify right side
    858,415.80x = 677,317,047,313.34
  5. Step 5: Solve for x
    x = 677,317,047,313.34/858,415.80
  6. Step 6: Final answer
    x = 789,031.43

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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.