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Finding the Fourth Proportional to 908,606.80, 1,362,910.20 and 820,133.20

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Solution

The fourth proportional to 908,606.80, 1,362,910.20 and 820,133.20 is: 1,230,199.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,606.80 : 1,362,910.20 = 820,133.20 : x
  2. Step 2: Convert to fraction form
    908,606.80/1,362,910.20 = 820,133.20/x
  3. Step 3: Cross multiply
    908,606.80x = 1,362,910.20 × 820,133.20
  4. Step 4: Simplify right side
    908,606.80x = 1,117,767,903,638.64
  5. Step 5: Solve for x
    x = 1,117,767,903,638.64/908,606.80
  6. Step 6: Final answer
    x = 1,230,199.80

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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.