Home / 887,129.80-1,330,889.10-438,065.80

Finding the Fourth Proportional to 887,129.80, 1,330,889.10 and 438,065.80

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Solution

The fourth proportional to 887,129.80, 1,330,889.10 and 438,065.80 is: 657,194.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,129.80 : 1,330,889.10 = 438,065.80 : x
  2. Step 2: Convert to fraction form
    887,129.80/1,330,889.10 = 438,065.80/x
  3. Step 3: Cross multiply
    887,129.80x = 1,330,889.10 × 438,065.80
  4. Step 4: Simplify right side
    887,129.80x = 583,016,998,302.78
  5. Step 5: Solve for x
    x = 583,016,998,302.78/887,129.80
  6. Step 6: Final answer
    x = 657,194.69

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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.