Home / 12,120,508,256.40-18,180,762,384.60-11,447,066,221.20

Finding the Fourth Proportional to 12,120,508,256.40, 18,180,762,384.60 and 11,447,066,221.20

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Solution

The fourth proportional to 12,120,508,256.40, 18,180,762,384.60 and 11,447,066,221.20 is: 17,170,599,331.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,120,508,256.40 : 18,180,762,384.60 = 11,447,066,221.20 : x
  2. Step 2: Convert to fraction form
    12,120,508,256.40/18,180,762,384.60 = 11,447,066,221.20/x
  3. Step 3: Cross multiply
    12,120,508,256.40x = 18,180,762,384.60 × 11,447,066,221.20
  4. Step 4: Simplify right side
    12,120,508,256.40x = 208,116,390,968,418,205,696
  5. Step 5: Solve for x
    x = 208,116,390,968,418,205,696/12,120,508,256.40
  6. Step 6: Final answer
    x = 17,170,599,331.80

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Double scale
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1.5x scale

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.