Home / 1,386,259.65-1,912,969.94-774,290.61

Finding the Fourth Proportional to 1,386,259.65, 1,912,969.94 and 774,290.61

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Solution

The fourth proportional to 1,386,259.65, 1,912,969.94 and 774,290.61 is: 1,068,482.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,259.65 : 1,912,969.94 = 774,290.61 : x
  2. Step 2: Convert to fraction form
    1,386,259.65/1,912,969.94 = 774,290.61/x
  3. Step 3: Cross multiply
    1,386,259.65x = 1,912,969.94 × 774,290.61
  4. Step 4: Simplify right side
    1,386,259.65x = 1,481,194,657,882.81
  5. Step 5: Solve for x
    x = 1,481,194,657,882.81/1,386,259.65
  6. Step 6: Final answer
    x = 1,068,482.85

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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.