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Finding the Fourth Proportional to 483,783.91, 721,594.19 and 420,103.24

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Solution

The fourth proportional to 483,783.91, 721,594.19 and 420,103.24 is: 626,610.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,783.91 : 721,594.19 = 420,103.24 : x
  2. Step 2: Convert to fraction form
    483,783.91/721,594.19 = 420,103.24/x
  3. Step 3: Cross multiply
    483,783.91x = 721,594.19 × 420,103.24
  4. Step 4: Simplify right side
    483,783.91x = 303,144,056,430.45
  5. Step 5: Solve for x
    x = 303,144,056,430.45/483,783.91
  6. Step 6: Final answer
    x = 626,610.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.