Home / 1,121,238,098.70-1,681,857,148.05-538,831,906.80

Finding the Fourth Proportional to 1,121,238,098.70, 1,681,857,148.05 and 538,831,906.80

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Solution

The fourth proportional to 1,121,238,098.70, 1,681,857,148.05 and 538,831,906.80 is: 808,247,860.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,238,098.70 : 1,681,857,148.05 = 538,831,906.80 : x
  2. Step 2: Convert to fraction form
    1,121,238,098.70/1,681,857,148.05 = 538,831,906.80/x
  3. Step 3: Cross multiply
    1,121,238,098.70x = 1,681,857,148.05 × 538,831,906.80
  4. Step 4: Simplify right side
    1,121,238,098.70x = 906,238,294,048,991,232
  5. Step 5: Solve for x
    x = 906,238,294,048,991,232/1,121,238,098.70
  6. Step 6: Final answer
    x = 808,247,860.20

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Double scale
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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.