Home / 528,962.49-729,973.53-287,247.15

Finding the Fourth Proportional to 528,962.49, 729,973.53 and 287,247.15

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Solution

The fourth proportional to 528,962.49, 729,973.53 and 287,247.15 is: 396,403.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,962.49 : 729,973.53 = 287,247.15 : x
  2. Step 2: Convert to fraction form
    528,962.49/729,973.53 = 287,247.15/x
  3. Step 3: Cross multiply
    528,962.49x = 729,973.53 × 287,247.15
  4. Step 4: Simplify right side
    528,962.49x = 209,682,816,067.94
  5. Step 5: Solve for x
    x = 209,682,816,067.94/528,962.49
  6. Step 6: Final answer
    x = 396,403.94

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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.