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Finding the Fourth Proportional to 638,606.44, 880,361.40 and 502,404.19

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Solution

The fourth proportional to 638,606.44, 880,361.40 and 502,404.19 is: 692,597.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,606.44 : 880,361.40 = 502,404.19 : x
  2. Step 2: Convert to fraction form
    638,606.44/880,361.40 = 502,404.19/x
  3. Step 3: Cross multiply
    638,606.44x = 880,361.40 × 502,404.19
  4. Step 4: Simplify right side
    638,606.44x = 442,297,256,074.27
  5. Step 5: Solve for x
    x = 442,297,256,074.27/638,606.44
  6. Step 6: Final answer
    x = 692,597.55

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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.