Home / 763,515.77-1,145,084.39-258,065.51

Finding the Fourth Proportional to 763,515.77, 1,145,084.39 and 258,065.51

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Solution

The fourth proportional to 763,515.77, 1,145,084.39 and 258,065.51 is: 387,034.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,515.77 : 1,145,084.39 = 258,065.51 : x
  2. Step 2: Convert to fraction form
    763,515.77/1,145,084.39 = 258,065.51/x
  3. Step 3: Cross multiply
    763,515.77x = 1,145,084.39 × 258,065.51
  4. Step 4: Simplify right side
    763,515.77x = 295,506,782,018.13
  5. Step 5: Solve for x
    x = 295,506,782,018.13/763,515.77
  6. Step 6: Final answer
    x = 387,034.29

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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.