Home / 528,666.36-729,540.06-286,943.78

Finding the Fourth Proportional to 528,666.36, 729,540.06 and 286,943.78

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Solution

The fourth proportional to 528,666.36, 729,540.06 and 286,943.78 is: 395,971.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,666.36 : 729,540.06 = 286,943.78 : x
  2. Step 2: Convert to fraction form
    528,666.36/729,540.06 = 286,943.78/x
  3. Step 3: Cross multiply
    528,666.36x = 729,540.06 × 286,943.78
  4. Step 4: Simplify right side
    528,666.36x = 209,336,982,477.83
  5. Step 5: Solve for x
    x = 209,336,982,477.83/528,666.36
  6. Step 6: Final answer
    x = 395,971.82

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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.