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Finding the Fourth Proportional to 909,118, 1,363,683.83 and 403,543.07

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Solution

The fourth proportional to 909,118, 1,363,683.83 and 403,543.07 is: 605,317.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,118 : 1,363,683.83 = 403,543.07 : x
  2. Step 2: Convert to fraction form
    909,118/1,363,683.83 = 403,543.07/x
  3. Step 3: Cross multiply
    909,118x = 1,363,683.83 × 403,543.07
  4. Step 4: Simplify right side
    909,118x = 550,305,159,267.56
  5. Step 5: Solve for x
    x = 550,305,159,267.56/909,118
  6. Step 6: Final answer
    x = 605,317.64

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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.