Home / 1,386,260.65-1,912,971.31-774,291.61

Finding the Fourth Proportional to 1,386,260.65, 1,912,971.31 and 774,291.61

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Solution

The fourth proportional to 1,386,260.65, 1,912,971.31 and 774,291.61 is: 1,068,484.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,260.65 : 1,912,971.31 = 774,291.61 : x
  2. Step 2: Convert to fraction form
    1,386,260.65/1,912,971.31 = 774,291.61/x
  3. Step 3: Cross multiply
    1,386,260.65x = 1,912,971.31 × 774,291.61
  4. Step 4: Simplify right side
    1,386,260.65x = 1,481,197,635,503.71
  5. Step 5: Solve for x
    x = 1,481,197,635,503.71/1,386,260.65
  6. Step 6: Final answer
    x = 1,068,484.22

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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.