Home / 1,378,461.96-1,901,998.20-805,391.40

Finding the Fourth Proportional to 1,378,461.96, 1,901,998.20 and 805,391.40

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Solution

The fourth proportional to 1,378,461.96, 1,901,998.20 and 805,391.40 is: 1,111,276.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,461.96 : 1,901,998.20 = 805,391.40 : x
  2. Step 2: Convert to fraction form
    1,378,461.96/1,901,998.20 = 805,391.40/x
  3. Step 3: Cross multiply
    1,378,461.96x = 1,901,998.20 × 805,391.40
  4. Step 4: Simplify right side
    1,378,461.96x = 1,531,852,993,095.48
  5. Step 5: Solve for x
    x = 1,531,852,993,095.48/1,378,461.96
  6. Step 6: Final answer
    x = 1,111,276.94

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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.