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Finding the Fourth Proportional to 503,783.70, 755,675.55 and 438,173.70

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Solution

The fourth proportional to 503,783.70, 755,675.55 and 438,173.70 is: 657,260.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,783.70 : 755,675.55 = 438,173.70 : x
  2. Step 2: Convert to fraction form
    503,783.70/755,675.55 = 438,173.70/x
  3. Step 3: Cross multiply
    503,783.70x = 755,675.55 × 438,173.70
  4. Step 4: Simplify right side
    503,783.70x = 331,117,151,743.04
  5. Step 5: Solve for x
    x = 331,117,151,743.04/503,783.70
  6. Step 6: Final answer
    x = 657,260.55

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.