Home / 8,778,921.78-12,115,382.68-4,911,212.28

Finding the Fourth Proportional to 8,778,921.78, 12,115,382.68 and 4,911,212.28

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Solution

The fourth proportional to 8,778,921.78, 12,115,382.68 and 4,911,212.28 is: 6,777,736.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,778,921.78 : 12,115,382.68 = 4,911,212.28 : x
  2. Step 2: Convert to fraction form
    8,778,921.78/12,115,382.68 = 4,911,212.28/x
  3. Step 3: Cross multiply
    8,778,921.78x = 12,115,382.68 × 4,911,212.28
  4. Step 4: Simplify right side
    8,778,921.78x = 59,501,216,194,915.31
  5. Step 5: Solve for x
    x = 59,501,216,194,915.31/8,778,921.78
  6. Step 6: Final answer
    x = 6,777,736.23

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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.