Home / 931,085.60-1,396,600.79-257,207.45

Finding the Fourth Proportional to 931,085.60, 1,396,600.79 and 257,207.45

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Solution

The fourth proportional to 931,085.60, 1,396,600.79 and 257,207.45 is: 385,803.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,085.60 : 1,396,600.79 = 257,207.45 : x
  2. Step 2: Convert to fraction form
    931,085.60/1,396,600.79 = 257,207.45/x
  3. Step 3: Cross multiply
    931,085.60x = 1,396,600.79 × 257,207.45
  4. Step 4: Simplify right side
    931,085.60x = 359,216,119,594.84
  5. Step 5: Solve for x
    x = 359,216,119,594.84/931,085.60
  6. Step 6: Final answer
    x = 385,803.54

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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.