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Finding the Fourth Proportional to 808,766.40, 1,213,441.20 and 779,606.40

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Solution

The fourth proportional to 808,766.40, 1,213,441.20 and 779,606.40 is: 1,169,690.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,766.40 : 1,213,441.20 = 779,606.40 : x
  2. Step 2: Convert to fraction form
    808,766.40/1,213,441.20 = 779,606.40/x
  3. Step 3: Cross multiply
    808,766.40x = 1,213,441.20 × 779,606.40
  4. Step 4: Simplify right side
    808,766.40x = 946,006,525,543.68
  5. Step 5: Solve for x
    x = 946,006,525,543.68/808,766.40
  6. Step 6: Final answer
    x = 1,169,690.69

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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.