Home / 1,121,237,435.70-1,681,856,153.55-538,831,243.80

Finding the Fourth Proportional to 1,121,237,435.70, 1,681,856,153.55 and 538,831,243.80

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Solution

The fourth proportional to 1,121,237,435.70, 1,681,856,153.55 and 538,831,243.80 is: 808,246,865.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,237,435.70 : 1,681,856,153.55 = 538,831,243.80 : x
  2. Step 2: Convert to fraction form
    1,121,237,435.70/1,681,856,153.55 = 538,831,243.80/x
  3. Step 3: Cross multiply
    1,121,237,435.70x = 1,681,856,153.55 × 538,831,243.80
  4. Step 4: Simplify right side
    1,121,237,435.70x = 906,236,643,110,030,208
  5. Step 5: Solve for x
    x = 906,236,643,110,030,208/1,121,237,435.70
  6. Step 6: Final answer
    x = 808,246,865.70

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Double scale
Find fourth proportional to 1,121,237,436.70, 1,681,856,155.05 and 538,831,244.80
Similar ratio
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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.