Home / 1,385,991.05-1,912,647.15-774,152.76

Finding the Fourth Proportional to 1,385,991.05, 1,912,647.15 and 774,152.76

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Solution

The fourth proportional to 1,385,991.05, 1,912,647.15 and 774,152.76 is: 1,068,319.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,991.05 : 1,912,647.15 = 774,152.76 : x
  2. Step 2: Convert to fraction form
    1,385,991.05/1,912,647.15 = 774,152.76/x
  3. Step 3: Cross multiply
    1,385,991.05x = 1,912,647.15 × 774,152.76
  4. Step 4: Simplify right side
    1,385,991.05x = 1,480,681,070,078.63
  5. Step 5: Solve for x
    x = 1,480,681,070,078.63/1,385,991.05
  6. Step 6: Final answer
    x = 1,068,319.36

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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.