Home / 642,260.90-886,312.55-347,905.07

Finding the Fourth Proportional to 642,260.90, 886,312.55 and 347,905.07

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Solution

The fourth proportional to 642,260.90, 886,312.55 and 347,905.07 is: 480,104.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,260.90 : 886,312.55 = 347,905.07 : x
  2. Step 2: Convert to fraction form
    642,260.90/886,312.55 = 347,905.07/x
  3. Step 3: Cross multiply
    642,260.90x = 886,312.55 × 347,905.07
  4. Step 4: Simplify right side
    642,260.90x = 308,352,632,540.04
  5. Step 5: Solve for x
    x = 308,352,632,540.04/642,260.90
  6. Step 6: Final answer
    x = 480,104.94

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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.