Home / 858,481.80-1,287,210.70-526,296.20

Finding the Fourth Proportional to 858,481.80, 1,287,210.70 and 526,296.20

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Solution

The fourth proportional to 858,481.80, 1,287,210.70 and 526,296.20 is: 789,130.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,481.80 : 1,287,210.70 = 526,296.20 : x
  2. Step 2: Convert to fraction form
    858,481.80/1,287,210.70 = 526,296.20/x
  3. Step 3: Cross multiply
    858,481.80x = 1,287,210.70 × 526,296.20
  4. Step 4: Simplify right side
    858,481.80x = 677,454,100,009.34
  5. Step 5: Solve for x
    x = 677,454,100,009.34/858,481.80
  6. Step 6: Final answer
    x = 789,130.42

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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.