Home / 811,807,913.96-1,120,294,921.37-440,529,945.33

Finding the Fourth Proportional to 811,807,913.96, 1,120,294,921.37 and 440,529,945.33

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Solution

The fourth proportional to 811,807,913.96, 1,120,294,921.37 and 440,529,945.33 is: 607,931,324.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,807,913.96 : 1,120,294,921.37 = 440,529,945.33 : x
  2. Step 2: Convert to fraction form
    811,807,913.96/1,120,294,921.37 = 440,529,945.33/x
  3. Step 3: Cross multiply
    811,807,913.96x = 1,120,294,921.37 × 440,529,945.33
  4. Step 4: Simplify right side
    811,807,913.96x = 493,523,460,466,601,216
  5. Step 5: Solve for x
    x = 493,523,460,466,601,216/811,807,913.96
  6. Step 6: Final answer
    x = 607,931,324.62

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.