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Finding the Fourth Proportional to 528,522.69, 729,363.29 and 286,805.31

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Solution

The fourth proportional to 528,522.69, 729,363.29 and 286,805.31 is: 395,792.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,522.69 : 729,363.29 = 286,805.31 : x
  2. Step 2: Convert to fraction form
    528,522.69/729,363.29 = 286,805.31/x
  3. Step 3: Cross multiply
    528,522.69x = 729,363.29 × 286,805.31
  4. Step 4: Simplify right side
    528,522.69x = 209,185,264,491.07
  5. Step 5: Solve for x
    x = 209,185,264,491.07/528,522.69
  6. Step 6: Final answer
    x = 395,792.40

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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.