Home / 783,151.20-1,173,805.20-408,981.60

Finding the Fourth Proportional to 783,151.20, 1,173,805.20 and 408,981.60

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Solution

The fourth proportional to 783,151.20, 1,173,805.20 and 408,981.60 is: 612,991.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,151.20 : 1,173,805.20 = 408,981.60 : x
  2. Step 2: Convert to fraction form
    783,151.20/1,173,805.20 = 408,981.60/x
  3. Step 3: Cross multiply
    783,151.20x = 1,173,805.20 × 408,981.60
  4. Step 4: Simplify right side
    783,151.20x = 480,064,728,784.32
  5. Step 5: Solve for x
    x = 480,064,728,784.32/783,151.20
  6. Step 6: Final answer
    x = 612,991.12

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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.