Home / 857,582.37-1,286,164.40-288,815.42

Finding the Fourth Proportional to 857,582.37, 1,286,164.40 and 288,815.42

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Solution

The fourth proportional to 857,582.37, 1,286,164.40 and 288,815.42 is: 433,152.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,582.37 : 1,286,164.40 = 288,815.42 : x
  2. Step 2: Convert to fraction form
    857,582.37/1,286,164.40 = 288,815.42/x
  3. Step 3: Cross multiply
    857,582.37x = 1,286,164.40 × 288,815.42
  4. Step 4: Simplify right side
    857,582.37x = 371,464,113,146.38
  5. Step 5: Solve for x
    x = 371,464,113,146.38/857,582.37
  6. Step 6: Final answer
    x = 433,152.69

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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.