Home / 528,727.46-729,644.81-287,010.19

Finding the Fourth Proportional to 528,727.46, 729,644.81 and 287,010.19

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Solution

The fourth proportional to 528,727.46, 729,644.81 and 287,010.19 is: 396,074.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,727.46 : 729,644.81 = 287,010.19 : x
  2. Step 2: Convert to fraction form
    528,727.46/729,644.81 = 287,010.19/x
  3. Step 3: Cross multiply
    528,727.46x = 729,644.81 × 287,010.19
  4. Step 4: Simplify right side
    528,727.46x = 209,415,492,291.45
  5. Step 5: Solve for x
    x = 209,415,492,291.45/528,727.46
  6. Step 6: Final answer
    x = 396,074.56

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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.