Home / 999,000.78-1,378,625.55-546,291.18

Finding the Fourth Proportional to 999,000.78, 1,378,625.55 and 546,291.18

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Solution

The fourth proportional to 999,000.78, 1,378,625.55 and 546,291.18 is: 753,884.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,000.78 : 1,378,625.55 = 546,291.18 : x
  2. Step 2: Convert to fraction form
    999,000.78/1,378,625.55 = 546,291.18/x
  3. Step 3: Cross multiply
    999,000.78x = 1,378,625.55 × 546,291.18
  4. Step 4: Simplify right side
    999,000.78x = 753,130,978,487.65
  5. Step 5: Solve for x
    x = 753,130,978,487.65/999,000.78
  6. Step 6: Final answer
    x = 753,884.27

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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.