Home / 642,280.48-886,441.46-370,295.21

Finding the Fourth Proportional to 642,280.48, 886,441.46 and 370,295.21

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Solution

The fourth proportional to 642,280.48, 886,441.46 and 370,295.21 is: 511,061.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,280.48 : 886,441.46 = 370,295.21 : x
  2. Step 2: Convert to fraction form
    642,280.48/886,441.46 = 370,295.21/x
  3. Step 3: Cross multiply
    642,280.48x = 886,441.46 × 370,295.21
  4. Step 4: Simplify right side
    642,280.48x = 328,245,026,583.41
  5. Step 5: Solve for x
    x = 328,245,026,583.41/642,280.48
  6. Step 6: Final answer
    x = 511,061.81

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1.5x scale

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.