Home / 1,378,388.72-1,901,897.52-805,318.16

Finding the Fourth Proportional to 1,378,388.72, 1,901,897.52 and 805,318.16

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Solution

The fourth proportional to 1,378,388.72, 1,901,897.52 and 805,318.16 is: 1,111,176.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,388.72 : 1,901,897.52 = 805,318.16 : x
  2. Step 2: Convert to fraction form
    1,378,388.72/1,901,897.52 = 805,318.16/x
  3. Step 3: Cross multiply
    1,378,388.72x = 1,901,897.52 × 805,318.16
  4. Step 4: Simplify right side
    1,378,388.72x = 1,531,632,611,314.96
  5. Step 5: Solve for x
    x = 1,531,632,611,314.96/1,378,388.72
  6. Step 6: Final answer
    x = 1,111,176.11

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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.