Home / 1,222,234,209.54-1,686,723,905.37-686,480,142.42

Finding the Fourth Proportional to 1,222,234,209.54, 1,686,723,905.37 and 686,480,142.42

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Solution

The fourth proportional to 1,222,234,209.54, 1,686,723,905.37 and 686,480,142.42 is: 947,365,453.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,234,209.54 : 1,686,723,905.37 = 686,480,142.42 : x
  2. Step 2: Convert to fraction form
    1,222,234,209.54/1,686,723,905.37 = 686,480,142.42/x
  3. Step 3: Cross multiply
    1,222,234,209.54x = 1,686,723,905.37 × 686,480,142.42
  4. Step 4: Simplify right side
    1,222,234,209.54x = 1,157,902,466,781,616,128
  5. Step 5: Solve for x
    x = 1,157,902,466,781,616,128/1,222,234,209.54
  6. Step 6: Final answer
    x = 947,365,453.97

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Half scale
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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.