Home / 1,380,219.28-1,904,262.96-776,490.64

Finding the Fourth Proportional to 1,380,219.28, 1,904,262.96 and 776,490.64

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Solution

The fourth proportional to 1,380,219.28, 1,904,262.96 and 776,490.64 is: 1,071,309.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,219.28 : 1,904,262.96 = 776,490.64 : x
  2. Step 2: Convert to fraction form
    1,380,219.28/1,904,262.96 = 776,490.64/x
  3. Step 3: Cross multiply
    1,380,219.28x = 1,904,262.96 × 776,490.64
  4. Step 4: Simplify right side
    1,380,219.28x = 1,478,642,364,538.69
  5. Step 5: Solve for x
    x = 1,478,642,364,538.69/1,380,219.28
  6. Step 6: Final answer
    x = 1,071,309.74

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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.