Home / 525,018.45-787,916.48-209,701.65

Finding the Fourth Proportional to 525,018.45, 787,916.48 and 209,701.65

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Solution

The fourth proportional to 525,018.45, 787,916.48 and 209,701.65 is: 314,707.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,018.45 : 787,916.48 = 209,701.65 : x
  2. Step 2: Convert to fraction form
    525,018.45/787,916.48 = 209,701.65/x
  3. Step 3: Cross multiply
    525,018.45x = 787,916.48 × 209,701.65
  4. Step 4: Simplify right side
    525,018.45x = 165,227,384,869.68
  5. Step 5: Solve for x
    x = 165,227,384,869.68/525,018.45
  6. Step 6: Final answer
    x = 314,707.77

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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.