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Finding the Fourth Proportional to 420,698.36, 580,559.46 and 259,488.92

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Solution

The fourth proportional to 420,698.36, 580,559.46 and 259,488.92 is: 358,092.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,698.36 : 580,559.46 = 259,488.92 : x
  2. Step 2: Convert to fraction form
    420,698.36/580,559.46 = 259,488.92/x
  3. Step 3: Cross multiply
    420,698.36x = 580,559.46 × 259,488.92
  4. Step 4: Simplify right side
    420,698.36x = 150,648,747,271.18
  5. Step 5: Solve for x
    x = 150,648,747,271.18/420,698.36
  6. Step 6: Final answer
    x = 358,092.07

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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.