Home / 909,707.94-1,255,323.31-522,399.81

Finding the Fourth Proportional to 909,707.94, 1,255,323.31 and 522,399.81

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Solution

The fourth proportional to 909,707.94, 1,255,323.31 and 522,399.81 is: 720,869.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,707.94 : 1,255,323.31 = 522,399.81 : x
  2. Step 2: Convert to fraction form
    909,707.94/1,255,323.31 = 522,399.81/x
  3. Step 3: Cross multiply
    909,707.94x = 1,255,323.31 × 522,399.81
  4. Step 4: Simplify right side
    909,707.94x = 655,780,650,707.65
  5. Step 5: Solve for x
    x = 655,780,650,707.65/909,707.94
  6. Step 6: Final answer
    x = 720,869.44

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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.