Home / 1,129,499.36-1,558,849.56-645,997.40

Finding the Fourth Proportional to 1,129,499.36, 1,558,849.56 and 645,997.40

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Solution

The fourth proportional to 1,129,499.36, 1,558,849.56 and 645,997.40 is: 891,556.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,499.36 : 1,558,849.56 = 645,997.40 : x
  2. Step 2: Convert to fraction form
    1,129,499.36/1,558,849.56 = 645,997.40/x
  3. Step 3: Cross multiply
    1,129,499.36x = 1,558,849.56 × 645,997.40
  4. Step 4: Simplify right side
    1,129,499.36x = 1,007,012,762,751.14
  5. Step 5: Solve for x
    x = 1,007,012,762,751.14/1,129,499.36
  6. Step 6: Final answer
    x = 891,556.74

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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.