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Finding the Fourth Proportional to 528,551.26, 729,401.22 and 286,833.86

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Solution

The fourth proportional to 528,551.26, 729,401.22 and 286,833.86 is: 395,830.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,551.26 : 729,401.22 = 286,833.86 : x
  2. Step 2: Convert to fraction form
    528,551.26/729,401.22 = 286,833.86/x
  3. Step 3: Cross multiply
    528,551.26x = 729,401.22 × 286,833.86
  4. Step 4: Simplify right side
    528,551.26x = 209,216,966,509.56
  5. Step 5: Solve for x
    x = 209,216,966,509.56/528,551.26
  6. Step 6: Final answer
    x = 395,830.99

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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.