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Finding the Fourth Proportional to 999,270, 1,378,992.60 and 546,561

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Solution

The fourth proportional to 999,270, 1,378,992.60 and 546,561 is: 754,254.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,270 : 1,378,992.60 = 546,561 : x
  2. Step 2: Convert to fraction form
    999,270/1,378,992.60 = 546,561/x
  3. Step 3: Cross multiply
    999,270x = 1,378,992.60 × 546,561
  4. Step 4: Simplify right side
    999,270x = 753,703,574,448.60
  5. Step 5: Solve for x
    x = 753,703,574,448.60/999,270
  6. Step 6: Final answer
    x = 754,254.18

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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.