Home / 725,063.48-1,086,477.42-388,148.84

Finding the Fourth Proportional to 725,063.48, 1,086,477.42 and 388,148.84

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Solution

The fourth proportional to 725,063.48, 1,086,477.42 and 388,148.84 is: 581,624.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,063.48 : 1,086,477.42 = 388,148.84 : x
  2. Step 2: Convert to fraction form
    725,063.48/1,086,477.42 = 388,148.84/x
  3. Step 3: Cross multiply
    725,063.48x = 1,086,477.42 × 388,148.84
  4. Step 4: Simplify right side
    725,063.48x = 421,714,950,259.19
  5. Step 5: Solve for x
    x = 421,714,950,259.19/725,063.48
  6. Step 6: Final answer
    x = 581,624.87

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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.