Home / 528,543.03-729,389.85-286,825.61

Finding the Fourth Proportional to 528,543.03, 729,389.85 and 286,825.61

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Solution

The fourth proportional to 528,543.03, 729,389.85 and 286,825.61 is: 395,819.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,543.03 : 729,389.85 = 286,825.61 : x
  2. Step 2: Convert to fraction form
    528,543.03/729,389.85 = 286,825.61/x
  3. Step 3: Cross multiply
    528,543.03x = 729,389.85 × 286,825.61
  4. Step 4: Simplify right side
    528,543.03x = 209,207,685,007.11
  5. Step 5: Solve for x
    x = 209,207,685,007.11/528,543.03
  6. Step 6: Final answer
    x = 395,819.59

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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.