Home / 1,016,399.78-1,402,627.74-629,138

Finding the Fourth Proportional to 1,016,399.78, 1,402,627.74 and 629,138

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Solution

The fourth proportional to 1,016,399.78, 1,402,627.74 and 629,138 is: 868,207.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,016,399.78 : 1,402,627.74 = 629,138 : x
  2. Step 2: Convert to fraction form
    1,016,399.78/1,402,627.74 = 629,138/x
  3. Step 3: Cross multiply
    1,016,399.78x = 1,402,627.74 × 629,138
  4. Step 4: Simplify right side
    1,016,399.78x = 882,446,411,088.12
  5. Step 5: Solve for x
    x = 882,446,411,088.12/1,016,399.78
  6. Step 6: Final answer
    x = 868,207.99

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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.