Home / 921,913.65-1,271,788.56-616,065.12

Finding the Fourth Proportional to 921,913.65, 1,271,788.56 and 616,065.12

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Solution

The fourth proportional to 921,913.65, 1,271,788.56 and 616,065.12 is: 849,867.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,913.65 : 1,271,788.56 = 616,065.12 : x
  2. Step 2: Convert to fraction form
    921,913.65/1,271,788.56 = 616,065.12/x
  3. Step 3: Cross multiply
    921,913.65x = 1,271,788.56 × 616,065.12
  4. Step 4: Simplify right side
    921,913.65x = 783,504,571,831.03
  5. Step 5: Solve for x
    x = 783,504,571,831.03/921,913.65
  6. Step 6: Final answer
    x = 849,867.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.