Home / 1,392,356.44-1,921,417.16-772,158

Finding the Fourth Proportional to 1,392,356.44, 1,921,417.16 and 772,158

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Solution

The fourth proportional to 1,392,356.44, 1,921,417.16 and 772,158 is: 1,065,558.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,356.44 : 1,921,417.16 = 772,158 : x
  2. Step 2: Convert to fraction form
    1,392,356.44/1,921,417.16 = 772,158/x
  3. Step 3: Cross multiply
    1,392,356.44x = 1,921,417.16 × 772,158
  4. Step 4: Simplify right side
    1,392,356.44x = 1,483,637,631,431.28
  5. Step 5: Solve for x
    x = 1,483,637,631,431.28/1,392,356.44
  6. Step 6: Final answer
    x = 1,065,558.78

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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.