Home / 1,242,095.76-1,861,814.64-642,453.12

Finding the Fourth Proportional to 1,242,095.76, 1,861,814.64 and 642,453.12

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Solution

The fourth proportional to 1,242,095.76, 1,861,814.64 and 642,453.12 is: 962,992.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,095.76 : 1,861,814.64 = 642,453.12 : x
  2. Step 2: Convert to fraction form
    1,242,095.76/1,861,814.64 = 642,453.12/x
  3. Step 3: Cross multiply
    1,242,095.76x = 1,861,814.64 × 642,453.12
  4. Step 4: Simplify right side
    1,242,095.76x = 1,196,128,624,329.68
  5. Step 5: Solve for x
    x = 1,196,128,624,329.68/1,242,095.76
  6. Step 6: Final answer
    x = 962,992.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.