Home / 1,069,131.45-1,475,401.32-639,411.57

Finding the Fourth Proportional to 1,069,131.45, 1,475,401.32 and 639,411.57

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Solution

The fourth proportional to 1,069,131.45, 1,475,401.32 and 639,411.57 is: 882,387.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,069,131.45 : 1,475,401.32 = 639,411.57 : x
  2. Step 2: Convert to fraction form
    1,069,131.45/1,475,401.32 = 639,411.57/x
  3. Step 3: Cross multiply
    1,069,131.45x = 1,475,401.32 × 639,411.57
  4. Step 4: Simplify right side
    1,069,131.45x = 943,388,674,401.27
  5. Step 5: Solve for x
    x = 943,388,674,401.27/1,069,131.45
  6. Step 6: Final answer
    x = 882,387.92

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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.