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Finding the Fourth Proportional to 522,045.83, 782,271.66 and 388,279.19

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Solution

The fourth proportional to 522,045.83, 782,271.66 and 388,279.19 is: 581,825.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,045.83 : 782,271.66 = 388,279.19 : x
  2. Step 2: Convert to fraction form
    522,045.83/782,271.66 = 388,279.19/x
  3. Step 3: Cross multiply
    522,045.83x = 782,271.66 × 388,279.19
  4. Step 4: Simplify right side
    522,045.83x = 303,739,806,504.76
  5. Step 5: Solve for x
    x = 303,739,806,504.76/522,045.83
  6. Step 6: Final answer
    x = 581,825.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.