Home / 638,225.30-880,738.84-347,839.29

Finding the Fourth Proportional to 638,225.30, 880,738.84 and 347,839.29

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Solution

The fourth proportional to 638,225.30, 880,738.84 and 347,839.29 is: 480,011.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,225.30 : 880,738.84 = 347,839.29 : x
  2. Step 2: Convert to fraction form
    638,225.30/880,738.84 = 347,839.29/x
  3. Step 3: Cross multiply
    638,225.30x = 880,738.84 × 347,839.29
  4. Step 4: Simplify right side
    638,225.30x = 306,355,572,781.02
  5. Step 5: Solve for x
    x = 306,355,572,781.02/638,225.30
  6. Step 6: Final answer
    x = 480,011.64

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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.