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Finding the Fourth Proportional to 582,511.34, 803,451.55 and 388,821.39

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Solution

The fourth proportional to 582,511.34, 803,451.55 and 388,821.39 is: 536,297.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    582,511.34 : 803,451.55 = 388,821.39 : x
  2. Step 2: Convert to fraction form
    582,511.34/803,451.55 = 388,821.39/x
  3. Step 3: Cross multiply
    582,511.34x = 803,451.55 × 388,821.39
  4. Step 4: Simplify right side
    582,511.34x = 312,399,148,468.66
  5. Step 5: Solve for x
    x = 312,399,148,468.66/582,511.34
  6. Step 6: Final answer
    x = 536,297.11

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1.5x scale

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.