Home / 2,128,915.47-2,937,464.78-1,223,322.51

Finding the Fourth Proportional to 2,128,915.47, 2,937,464.78 and 1,223,322.51

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Solution

The fourth proportional to 2,128,915.47, 2,937,464.78 and 1,223,322.51 is: 1,687,933.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128,915.47 : 2,937,464.78 = 1,223,322.51 : x
  2. Step 2: Convert to fraction form
    2,128,915.47/2,937,464.78 = 1,223,322.51/x
  3. Step 3: Cross multiply
    2,128,915.47x = 2,937,464.78 × 1,223,322.51
  4. Step 4: Simplify right side
    2,128,915.47x = 3,593,466,787,706.20
  5. Step 5: Solve for x
    x = 3,593,466,787,706.20/2,128,915.47
  6. Step 6: Final answer
    x = 1,687,933.05

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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.