Home / 1,386,770.40-2,080,846.80-788,191.20

Finding the Fourth Proportional to 1,386,770.40, 2,080,846.80 and 788,191.20

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Solution

The fourth proportional to 1,386,770.40, 2,080,846.80 and 788,191.20 is: 1,182,679.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,770.40 : 2,080,846.80 = 788,191.20 : x
  2. Step 2: Convert to fraction form
    1,386,770.40/2,080,846.80 = 788,191.20/x
  3. Step 3: Cross multiply
    1,386,770.40x = 2,080,846.80 × 788,191.20
  4. Step 4: Simplify right side
    1,386,770.40x = 1,640,105,136,308.16
  5. Step 5: Solve for x
    x = 1,640,105,136,308.16/1,386,770.40
  6. Step 6: Final answer
    x = 1,182,679.65

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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.