Home / 1,428,438.84-1,971,275.70-783,853.39

Finding the Fourth Proportional to 1,428,438.84, 1,971,275.70 and 783,853.39

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Solution

The fourth proportional to 1,428,438.84, 1,971,275.70 and 783,853.39 is: 1,081,734.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,438.84 : 1,971,275.70 = 783,853.39 : x
  2. Step 2: Convert to fraction form
    1,428,438.84/1,971,275.70 = 783,853.39/x
  3. Step 3: Cross multiply
    1,428,438.84x = 1,971,275.70 × 783,853.39
  4. Step 4: Simplify right side
    1,428,438.84x = 1,545,191,140,069.62
  5. Step 5: Solve for x
    x = 1,545,191,140,069.62/1,428,438.84
  6. Step 6: Final answer
    x = 1,081,734.20

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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.