Home / 1,128,392.92-1,557,182.16-644,968.48

Finding the Fourth Proportional to 1,128,392.92, 1,557,182.16 and 644,968.48

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Solution

The fourth proportional to 1,128,392.92, 1,557,182.16 and 644,968.48 is: 890,056.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,392.92 : 1,557,182.16 = 644,968.48 : x
  2. Step 2: Convert to fraction form
    1,128,392.92/1,557,182.16 = 644,968.48/x
  3. Step 3: Cross multiply
    1,128,392.92x = 1,557,182.16 × 644,968.48
  4. Step 4: Simplify right side
    1,128,392.92x = 1,004,333,410,818.32
  5. Step 5: Solve for x
    x = 1,004,333,410,818.32/1,128,392.92
  6. Step 6: Final answer
    x = 890,056.46

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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.