Home / 12,938,259,087.60-19,407,388,631.40-12,430,343,209.20

Finding the Fourth Proportional to 12,938,259,087.60, 19,407,388,631.40 and 12,430,343,209.20

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Solution

The fourth proportional to 12,938,259,087.60, 19,407,388,631.40 and 12,430,343,209.20 is: 18,645,514,813.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,938,259,087.60 : 19,407,388,631.40 = 12,430,343,209.20 : x
  2. Step 2: Convert to fraction form
    12,938,259,087.60/19,407,388,631.40 = 12,430,343,209.20/x
  3. Step 3: Cross multiply
    12,938,259,087.60x = 19,407,388,631.40 × 12,430,343,209.20
  4. Step 4: Simplify right side
    12,938,259,087.60x = 241,240,501,482,628,317,184
  5. Step 5: Solve for x
    x = 241,240,501,482,628,317,184/12,938,259,087.60
  6. Step 6: Final answer
    x = 18,645,514,813.80

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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.