Home / 12,138,336,111.40-18,208,008,051.90-3,856,989,423.40

Finding the Fourth Proportional to 12,138,336,111.40, 18,208,008,051.90 and 3,856,989,423.40

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Solution

The fourth proportional to 12,138,336,111.40, 18,208,008,051.90 and 3,856,989,423.40 is: 5,785,644,245.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,138,336,111.40 : 18,208,008,051.90 = 3,856,989,423.40 : x
  2. Step 2: Convert to fraction form
    12,138,336,111.40/18,208,008,051.90 = 3,856,989,423.40/x
  3. Step 3: Cross multiply
    12,138,336,111.40x = 18,208,008,051.90 × 3,856,989,423.40
  4. Step 4: Simplify right side
    12,138,336,111.40x = 70,228,094,477,360,349,184
  5. Step 5: Solve for x
    x = 70,228,094,477,360,349,184/12,138,336,111.40
  6. Step 6: Final answer
    x = 5,785,644,245.87

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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.