Home / 725,281.45-1,000,829.79-419,377.64

Finding the Fourth Proportional to 725,281.45, 1,000,829.79 and 419,377.64

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Solution

The fourth proportional to 725,281.45, 1,000,829.79 and 419,377.64 is: 578,707.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,281.45 : 1,000,829.79 = 419,377.64 : x
  2. Step 2: Convert to fraction form
    725,281.45/1,000,829.79 = 419,377.64/x
  3. Step 3: Cross multiply
    725,281.45x = 1,000,829.79 × 419,377.64
  4. Step 4: Simplify right side
    725,281.45x = 419,725,630,367.75
  5. Step 5: Solve for x
    x = 419,725,630,367.75/725,281.45
  6. Step 6: Final answer
    x = 578,707.25

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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.