Home / 638,170.65-880,663.74-347,784.55

Finding the Fourth Proportional to 638,170.65, 880,663.74 and 347,784.55

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Solution

The fourth proportional to 638,170.65, 880,663.74 and 347,784.55 is: 479,936.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,170.65 : 880,663.74 = 347,784.55 : x
  2. Step 2: Convert to fraction form
    638,170.65/880,663.74 = 347,784.55/x
  3. Step 3: Cross multiply
    638,170.65x = 880,663.74 × 347,784.55
  4. Step 4: Simplify right side
    638,170.65x = 306,281,242,206.09
  5. Step 5: Solve for x
    x = 306,281,242,206.09/638,170.65
  6. Step 6: Final answer
    x = 479,936.27

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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.