Home / 1,378,374.32-1,901,877.81-805,303.77

Finding the Fourth Proportional to 1,378,374.32, 1,901,877.81 and 805,303.77

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Solution

The fourth proportional to 1,378,374.32, 1,901,877.81 and 805,303.77 is: 1,111,156.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,374.32 : 1,901,877.81 = 805,303.77 : x
  2. Step 2: Convert to fraction form
    1,378,374.32/1,901,877.81 = 805,303.77/x
  3. Step 3: Cross multiply
    1,378,374.32x = 1,901,877.81 × 805,303.77
  4. Step 4: Simplify right side
    1,378,374.32x = 1,531,589,370,472.34
  5. Step 5: Solve for x
    x = 1,531,589,370,472.34/1,378,374.32
  6. Step 6: Final answer
    x = 1,111,156.35

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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.