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Finding the Fourth Proportional to 543,933,152.40, 815,899,728.60 and 436,437,728.40

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Solution

The fourth proportional to 543,933,152.40, 815,899,728.60 and 436,437,728.40 is: 654,656,592.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,933,152.40 : 815,899,728.60 = 436,437,728.40 : x
  2. Step 2: Convert to fraction form
    543,933,152.40/815,899,728.60 = 436,437,728.40/x
  3. Step 3: Cross multiply
    543,933,152.40x = 815,899,728.60 × 436,437,728.40
  4. Step 4: Simplify right side
    543,933,152.40x = 356,089,424,152,360,512
  5. Step 5: Solve for x
    x = 356,089,424,152,360,512/543,933,152.40
  6. Step 6: Final answer
    x = 654,656,592.60

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.