Home / 638,144.04-880,627.43-347,758.20

Finding the Fourth Proportional to 638,144.04, 880,627.43 and 347,758.20

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Solution

The fourth proportional to 638,144.04, 880,627.43 and 347,758.20 is: 479,900.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,144.04 : 880,627.43 = 347,758.20 : x
  2. Step 2: Convert to fraction form
    638,144.04/880,627.43 = 347,758.20/x
  3. Step 3: Cross multiply
    638,144.04x = 880,627.43 × 347,758.20
  4. Step 4: Simplify right side
    638,144.04x = 306,245,409,927.43
  5. Step 5: Solve for x
    x = 306,245,409,927.43/638,144.04
  6. Step 6: Final answer
    x = 479,900.13

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Double scale
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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.