Home / 678,225.48-936,034.02-391,745.24

Finding the Fourth Proportional to 678,225.48, 936,034.02 and 391,745.24

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Solution

The fourth proportional to 678,225.48, 936,034.02 and 391,745.24 is: 540,656.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,225.48 : 936,034.02 = 391,745.24 : x
  2. Step 2: Convert to fraction form
    678,225.48/936,034.02 = 391,745.24/x
  3. Step 3: Cross multiply
    678,225.48x = 936,034.02 × 391,745.24
  4. Step 4: Simplify right side
    678,225.48x = 366,686,871,813.07
  5. Step 5: Solve for x
    x = 366,686,871,813.07/678,225.48
  6. Step 6: Final answer
    x = 540,656.29

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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.