Home / 1,386,021.36-1,912,740.84-813,474.48

Finding the Fourth Proportional to 1,386,021.36, 1,912,740.84 and 813,474.48

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Solution

The fourth proportional to 1,386,021.36, 1,912,740.84 and 813,474.48 is: 1,122,613.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,021.36 : 1,912,740.84 = 813,474.48 : x
  2. Step 2: Convert to fraction form
    1,386,021.36/1,912,740.84 = 813,474.48/x
  3. Step 3: Cross multiply
    1,386,021.36x = 1,912,740.84 × 813,474.48
  4. Step 4: Simplify right side
    1,386,021.36x = 1,555,965,860,193.76
  5. Step 5: Solve for x
    x = 1,555,965,860,193.76/1,386,021.36
  6. Step 6: Final answer
    x = 1,122,613.19

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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.