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Finding the Fourth Proportional to 638,608.44, 880,364.16 and 502,406.19

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Solution

The fourth proportional to 638,608.44, 880,364.16 and 502,406.19 is: 692,600.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,608.44 : 880,364.16 = 502,406.19 : x
  2. Step 2: Convert to fraction form
    638,608.44/880,364.16 = 502,406.19/x
  3. Step 3: Cross multiply
    638,608.44x = 880,364.16 × 502,406.19
  4. Step 4: Simplify right side
    638,608.44x = 442,300,403,438.15
  5. Step 5: Solve for x
    x = 442,300,403,438.15/638,608.44
  6. Step 6: Final answer
    x = 692,600.31

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Double scale
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Similar ratio
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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.