Home / 678,315.02-936,085.71-372,419.60

Finding the Fourth Proportional to 678,315.02, 936,085.71 and 372,419.60

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Solution

The fourth proportional to 678,315.02, 936,085.71 and 372,419.60 is: 513,945.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,315.02 : 936,085.71 = 372,419.60 : x
  2. Step 2: Convert to fraction form
    678,315.02/936,085.71 = 372,419.60/x
  3. Step 3: Cross multiply
    678,315.02x = 936,085.71 × 372,419.60
  4. Step 4: Simplify right side
    678,315.02x = 348,616,665,683.92
  5. Step 5: Solve for x
    x = 348,616,665,683.92/678,315.02
  6. Step 6: Final answer
    x = 513,945.08

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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.