Home / 1,428,439.34-1,971,276.39-783,853.89

Finding the Fourth Proportional to 1,428,439.34, 1,971,276.39 and 783,853.89

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Solution

The fourth proportional to 1,428,439.34, 1,971,276.39 and 783,853.89 is: 1,081,734.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,439.34 : 1,971,276.39 = 783,853.89 : x
  2. Step 2: Convert to fraction form
    1,428,439.34/1,971,276.39 = 783,853.89/x
  3. Step 3: Cross multiply
    1,428,439.34x = 1,971,276.39 × 783,853.89
  4. Step 4: Simplify right side
    1,428,439.34x = 1,545,192,666,566.66
  5. Step 5: Solve for x
    x = 1,545,192,666,566.66/1,428,439.34
  6. Step 6: Final answer
    x = 1,081,734.89

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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.