Home / 1,378,561.32-1,902,133.08-805,490.76

Finding the Fourth Proportional to 1,378,561.32, 1,902,133.08 and 805,490.76

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Solution

The fourth proportional to 1,378,561.32, 1,902,133.08 and 805,490.76 is: 1,111,412.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,561.32 : 1,902,133.08 = 805,490.76 : x
  2. Step 2: Convert to fraction form
    1,378,561.32/1,902,133.08 = 805,490.76/x
  3. Step 3: Cross multiply
    1,378,561.32x = 1,902,133.08 × 805,490.76
  4. Step 4: Simplify right side
    1,378,561.32x = 1,532,150,620,230.34
  5. Step 5: Solve for x
    x = 1,532,150,620,230.34/1,378,561.32
  6. Step 6: Final answer
    x = 1,111,412.74

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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.