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Finding the Fourth Proportional to 472,003.80, 707,544.90 and 422,237.40

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Solution

The fourth proportional to 472,003.80, 707,544.90 and 422,237.40 is: 632,943.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,003.80 : 707,544.90 = 422,237.40 : x
  2. Step 2: Convert to fraction form
    472,003.80/707,544.90 = 422,237.40/x
  3. Step 3: Cross multiply
    472,003.80x = 707,544.90 × 422,237.40
  4. Step 4: Simplify right side
    472,003.80x = 298,751,918,959.26
  5. Step 5: Solve for x
    x = 298,751,918,959.26/472,003.80
  6. Step 6: Final answer
    x = 632,943.89

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1.5x scale

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.