Home / 1,021,378-1,409,511.36-568,678.72

Finding the Fourth Proportional to 1,021,378, 1,409,511.36 and 568,678.72

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Solution

The fourth proportional to 1,021,378, 1,409,511.36 and 568,678.72 is: 784,782.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021,378 : 1,409,511.36 = 568,678.72 : x
  2. Step 2: Convert to fraction form
    1,021,378/1,409,511.36 = 568,678.72/x
  3. Step 3: Cross multiply
    1,021,378x = 1,409,511.36 × 568,678.72
  4. Step 4: Simplify right side
    1,021,378x = 801,559,116,030.26
  5. Step 5: Solve for x
    x = 801,559,116,030.26/1,021,378
  6. Step 6: Final answer
    x = 784,782.05

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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.