Home / 1,428,514.40-1,971,374.28-783,994.52

Finding the Fourth Proportional to 1,428,514.40, 1,971,374.28 and 783,994.52

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Solution

The fourth proportional to 1,428,514.40, 1,971,374.28 and 783,994.52 is: 1,081,925.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,514.40 : 1,971,374.28 = 783,994.52 : x
  2. Step 2: Convert to fraction form
    1,428,514.40/1,971,374.28 = 783,994.52/x
  3. Step 3: Cross multiply
    1,428,514.40x = 1,971,374.28 × 783,994.52
  4. Step 4: Simplify right side
    1,428,514.40x = 1,545,546,632,388.95
  5. Step 5: Solve for x
    x = 1,545,546,632,388.95/1,428,514.40
  6. Step 6: Final answer
    x = 1,081,925.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.