Home / 505,916.29-698,137.06-279,547.21

Finding the Fourth Proportional to 505,916.29, 698,137.06 and 279,547.21

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Solution

The fourth proportional to 505,916.29, 698,137.06 and 279,547.21 is: 385,760.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,916.29 : 698,137.06 = 279,547.21 : x
  2. Step 2: Convert to fraction form
    505,916.29/698,137.06 = 279,547.21/x
  3. Step 3: Cross multiply
    505,916.29x = 698,137.06 × 279,547.21
  4. Step 4: Simplify right side
    505,916.29x = 195,162,263,829.92
  5. Step 5: Solve for x
    x = 195,162,263,829.92/505,916.29
  6. Step 6: Final answer
    x = 385,760.00

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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.