Home / 926,485.20-1,390,246.20-393,915.60

Finding the Fourth Proportional to 926,485.20, 1,390,246.20 and 393,915.60

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Solution

The fourth proportional to 926,485.20, 1,390,246.20 and 393,915.60 is: 591,093.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,485.20 : 1,390,246.20 = 393,915.60 : x
  2. Step 2: Convert to fraction form
    926,485.20/1,390,246.20 = 393,915.60/x
  3. Step 3: Cross multiply
    926,485.20x = 1,390,246.20 × 393,915.60
  4. Step 4: Simplify right side
    926,485.20x = 547,639,666,020.72
  5. Step 5: Solve for x
    x = 547,639,666,020.72/926,485.20
  6. Step 6: Final answer
    x = 591,093.81

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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.