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Finding the Fourth Proportional to 680,133.80, 1,020,200.70 and 606,650.60

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Solution

The fourth proportional to 680,133.80, 1,020,200.70 and 606,650.60 is: 909,975.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,133.80 : 1,020,200.70 = 606,650.60 : x
  2. Step 2: Convert to fraction form
    680,133.80/1,020,200.70 = 606,650.60/x
  3. Step 3: Cross multiply
    680,133.80x = 1,020,200.70 × 606,650.60
  4. Step 4: Simplify right side
    680,133.80x = 618,905,366,775.42
  5. Step 5: Solve for x
    x = 618,905,366,775.42/680,133.80
  6. Step 6: Final answer
    x = 909,975.90

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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.