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Finding the Fourth Proportional to 483,358.80, 725,038.20 and 439,813.20

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Solution

The fourth proportional to 483,358.80, 725,038.20 and 439,813.20 is: 659,719.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,358.80 : 725,038.20 = 439,813.20 : x
  2. Step 2: Convert to fraction form
    483,358.80/725,038.20 = 439,813.20/x
  3. Step 3: Cross multiply
    483,358.80x = 725,038.20 × 439,813.20
  4. Step 4: Simplify right side
    483,358.80x = 318,881,370,864.24
  5. Step 5: Solve for x
    x = 318,881,370,864.24/483,358.80
  6. Step 6: Final answer
    x = 659,719.80

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Similar ratio
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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.