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Finding the Fourth Proportional to 910,811, 1,256,903.62 and 502,902.68

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Solution

The fourth proportional to 910,811, 1,256,903.62 and 502,902.68 is: 693,997.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,811 : 1,256,903.62 = 502,902.68 : x
  2. Step 2: Convert to fraction form
    910,811/1,256,903.62 = 502,902.68/x
  3. Step 3: Cross multiply
    910,811x = 1,256,903.62 × 502,902.68
  4. Step 4: Simplify right side
    910,811x = 632,100,198,999.70
  5. Step 5: Solve for x
    x = 632,100,198,999.70/910,811
  6. Step 6: Final answer
    x = 693,997.11

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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.