Home / 1,385,992.81-1,912,649.79-774,154.45

Finding the Fourth Proportional to 1,385,992.81, 1,912,649.79 and 774,154.45

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Solution

The fourth proportional to 1,385,992.81, 1,912,649.79 and 774,154.45 is: 1,068,321.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,992.81 : 1,912,649.79 = 774,154.45 : x
  2. Step 2: Convert to fraction form
    1,385,992.81/1,912,649.79 = 774,154.45/x
  3. Step 3: Cross multiply
    1,385,992.81x = 1,912,649.79 × 774,154.45
  4. Step 4: Simplify right side
    1,385,992.81x = 1,480,686,346,220.07
  5. Step 5: Solve for x
    x = 1,480,686,346,220.07/1,385,992.81
  6. Step 6: Final answer
    x = 1,068,321.81

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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.