Home / 814,411.36-1,123,940.81-470,261.80

Finding the Fourth Proportional to 814,411.36, 1,123,940.81 and 470,261.80

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Solution

The fourth proportional to 814,411.36, 1,123,940.81 and 470,261.80 is: 648,991.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,411.36 : 1,123,940.81 = 470,261.80 : x
  2. Step 2: Convert to fraction form
    814,411.36/1,123,940.81 = 470,261.80/x
  3. Step 3: Cross multiply
    814,411.36x = 1,123,940.81 × 470,261.80
  4. Step 4: Simplify right side
    814,411.36x = 528,546,426,769.86
  5. Step 5: Solve for x
    x = 528,546,426,769.86/814,411.36
  6. Step 6: Final answer
    x = 648,991.96

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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.