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Finding the Fourth Proportional to 990,592.75, 1,367,018 and 537,883.75

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Solution

The fourth proportional to 990,592.75, 1,367,018 and 537,883.75 is: 742,279.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,592.75 : 1,367,018 = 537,883.75 : x
  2. Step 2: Convert to fraction form
    990,592.75/1,367,018 = 537,883.75/x
  3. Step 3: Cross multiply
    990,592.75x = 1,367,018 × 537,883.75
  4. Step 4: Simplify right side
    990,592.75x = 735,296,768,157.50
  5. Step 5: Solve for x
    x = 735,296,768,157.50/990,592.75
  6. Step 6: Final answer
    x = 742,279.58

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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.