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Finding the Fourth Proportional to 632,121.80, 872,408.34 and 360,287.40

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Solution

The fourth proportional to 632,121.80, 872,408.34 and 360,287.40 is: 497,242.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    632,121.80 : 872,408.34 = 360,287.40 : x
  2. Step 2: Convert to fraction form
    632,121.80/872,408.34 = 360,287.40/x
  3. Step 3: Cross multiply
    632,121.80x = 872,408.34 × 360,287.40
  4. Step 4: Simplify right side
    632,121.80x = 314,317,732,556.92
  5. Step 5: Solve for x
    x = 314,317,732,556.92/632,121.80
  6. Step 6: Final answer
    x = 497,242.36

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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.