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Finding the Fourth Proportional to 909,117, 1,363,682.33 and 403,542.07

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Solution

The fourth proportional to 909,117, 1,363,682.33 and 403,542.07 is: 605,316.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,117 : 1,363,682.33 = 403,542.07 : x
  2. Step 2: Convert to fraction form
    909,117/1,363,682.33 = 403,542.07/x
  3. Step 3: Cross multiply
    909,117x = 1,363,682.33 × 403,542.07
  4. Step 4: Simplify right side
    909,117x = 550,303,188,626.91
  5. Step 5: Solve for x
    x = 550,303,188,626.91/909,117
  6. Step 6: Final answer
    x = 605,316.13

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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.