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Finding the Fourth Proportional to 999,483.78, 1,379,320.22 and 546,774.78

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Solution

The fourth proportional to 999,483.78, 1,379,320.22 and 546,774.78 is: 754,567.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,483.78 : 1,379,320.22 = 546,774.78 : x
  2. Step 2: Convert to fraction form
    999,483.78/1,379,320.22 = 546,774.78/x
  3. Step 3: Cross multiply
    999,483.78x = 1,379,320.22 × 546,774.78
  4. Step 4: Simplify right side
    999,483.78x = 754,177,507,106.18
  5. Step 5: Solve for x
    x = 754,177,507,106.18/999,483.78
  6. Step 6: Final answer
    x = 754,567.03

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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.