Home / 678,497.59-1,017,590.91-405,021.07

Finding the Fourth Proportional to 678,497.59, 1,017,590.91 and 405,021.07

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Solution

The fourth proportional to 678,497.59, 1,017,590.91 and 405,021.07 is: 607,438.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,497.59 : 1,017,590.91 = 405,021.07 : x
  2. Step 2: Convert to fraction form
    678,497.59/1,017,590.91 = 405,021.07/x
  3. Step 3: Cross multiply
    678,497.59x = 1,017,590.91 × 405,021.07
  4. Step 4: Simplify right side
    678,497.59x = 412,145,759,190.47
  5. Step 5: Solve for x
    x = 412,145,759,190.47/678,497.59
  6. Step 6: Final answer
    x = 607,438.80

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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.