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Finding the Fourth Proportional to 886,990.80, 1,330,486.20 and 877,659.60

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Solution

The fourth proportional to 886,990.80, 1,330,486.20 and 877,659.60 is: 1,316,489.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,990.80 : 1,330,486.20 = 877,659.60 : x
  2. Step 2: Convert to fraction form
    886,990.80/1,330,486.20 = 877,659.60/x
  3. Step 3: Cross multiply
    886,990.80x = 1,330,486.20 × 877,659.60
  4. Step 4: Simplify right side
    886,990.80x = 1,167,713,986,097.52
  5. Step 5: Solve for x
    x = 1,167,713,986,097.52/886,990.80
  6. Step 6: Final answer
    x = 1,316,489.40

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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.