Home / 1,222,347.03-1,686,659.13-678,486.90

Finding the Fourth Proportional to 1,222,347.03, 1,686,659.13 and 678,486.90

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Solution

The fourth proportional to 1,222,347.03, 1,686,659.13 and 678,486.90 is: 936,212.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,347.03 : 1,686,659.13 = 678,486.90 : x
  2. Step 2: Convert to fraction form
    1,222,347.03/1,686,659.13 = 678,486.90/x
  3. Step 3: Cross multiply
    1,222,347.03x = 1,686,659.13 × 678,486.90
  4. Step 4: Simplify right side
    1,222,347.03x = 1,144,376,124,470.40
  5. Step 5: Solve for x
    x = 1,144,376,124,470.40/1,222,347.03
  6. Step 6: Final answer
    x = 936,212.14

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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.