Home / 1,432,561.16-1,977,215.31-821,123.75

Finding the Fourth Proportional to 1,432,561.16, 1,977,215.31 and 821,123.75

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Solution

The fourth proportional to 1,432,561.16, 1,977,215.31 and 821,123.75 is: 1,133,311.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432,561.16 : 1,977,215.31 = 821,123.75 : x
  2. Step 2: Convert to fraction form
    1,432,561.16/1,977,215.31 = 821,123.75/x
  3. Step 3: Cross multiply
    1,432,561.16x = 1,977,215.31 × 821,123.75
  4. Step 4: Simplify right side
    1,432,561.16x = 1,623,538,440,018.54
  5. Step 5: Solve for x
    x = 1,623,538,440,018.54/1,432,561.16
  6. Step 6: Final answer
    x = 1,133,311.79

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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.