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Finding the Fourth Proportional to 645,300.80, 967,951.20 and 365,364.80

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Solution

The fourth proportional to 645,300.80, 967,951.20 and 365,364.80 is: 548,047.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,300.80 : 967,951.20 = 365,364.80 : x
  2. Step 2: Convert to fraction form
    645,300.80/967,951.20 = 365,364.80/x
  3. Step 3: Cross multiply
    645,300.80x = 967,951.20 × 365,364.80
  4. Step 4: Simplify right side
    645,300.80x = 353,655,296,597.76
  5. Step 5: Solve for x
    x = 353,655,296,597.76/645,300.80
  6. Step 6: Final answer
    x = 548,047.20

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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.