Home / 763,341.36-1,145,012.28-257,903.88

Finding the Fourth Proportional to 763,341.36, 1,145,012.28 and 257,903.88

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Solution

The fourth proportional to 763,341.36, 1,145,012.28 and 257,903.88 is: 386,855.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,341.36 : 1,145,012.28 = 257,903.88 : x
  2. Step 2: Convert to fraction form
    763,341.36/1,145,012.28 = 257,903.88/x
  3. Step 3: Cross multiply
    763,341.36x = 1,145,012.28 × 257,903.88
  4. Step 4: Simplify right side
    763,341.36x = 295,303,109,659.65
  5. Step 5: Solve for x
    x = 295,303,109,659.65/763,341.36
  6. Step 6: Final answer
    x = 386,855.90

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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.