Home / 811,521,921.21-1,119,805,772.19-454,309,258.32

Finding the Fourth Proportional to 811,521,921.21, 1,119,805,772.19 and 454,309,258.32

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Solution

The fourth proportional to 811,521,921.21, 1,119,805,772.19 and 454,309,258.32 is: 626,893,884.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,521,921.21 : 1,119,805,772.19 = 454,309,258.32 : x
  2. Step 2: Convert to fraction form
    811,521,921.21/1,119,805,772.19 = 454,309,258.32/x
  3. Step 3: Cross multiply
    811,521,921.21x = 1,119,805,772.19 × 454,309,258.32
  4. Step 4: Simplify right side
    811,521,921.21x = 508,738,129,826,093,824
  5. Step 5: Solve for x
    x = 508,738,129,826,093,824/811,521,921.21
  6. Step 6: Final answer
    x = 626,893,884.85

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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.