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Finding the Fourth Proportional to 582,509.84, 803,449.49 and 388,819.89

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Solution

The fourth proportional to 582,509.84, 803,449.49 and 388,819.89 is: 536,295.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    582,509.84 : 803,449.49 = 388,819.89 : x
  2. Step 2: Convert to fraction form
    582,509.84/803,449.49 = 388,819.89/x
  3. Step 3: Cross multiply
    582,509.84x = 803,449.49 × 388,819.89
  4. Step 4: Simplify right side
    582,509.84x = 312,397,140,378.26
  5. Step 5: Solve for x
    x = 312,397,140,378.26/582,509.84
  6. Step 6: Final answer
    x = 536,295.05

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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.