Home / 528,848.72-729,809.19-287,131.23

Finding the Fourth Proportional to 528,848.72, 729,809.19 and 287,131.23

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Solution

The fourth proportional to 528,848.72, 729,809.19 and 287,131.23 is: 396,239.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,848.72 : 729,809.19 = 287,131.23 : x
  2. Step 2: Convert to fraction form
    528,848.72/729,809.19 = 287,131.23/x
  3. Step 3: Cross multiply
    528,848.72x = 729,809.19 × 287,131.23
  4. Step 4: Simplify right side
    528,848.72x = 209,551,010,390.00
  5. Step 5: Solve for x
    x = 209,551,010,390.00/528,848.72
  6. Step 6: Final answer
    x = 396,239.99

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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.