Home / 1,431,311.76-1,975,215.24-786,787.92

Finding the Fourth Proportional to 1,431,311.76, 1,975,215.24 and 786,787.92

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Solution

The fourth proportional to 1,431,311.76, 1,975,215.24 and 786,787.92 is: 1,085,770.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,311.76 : 1,975,215.24 = 786,787.92 : x
  2. Step 2: Convert to fraction form
    1,431,311.76/1,975,215.24 = 786,787.92/x
  3. Step 3: Cross multiply
    1,431,311.76x = 1,975,215.24 × 786,787.92
  4. Step 4: Simplify right side
    1,431,311.76x = 1,554,075,490,231.90
  5. Step 5: Solve for x
    x = 1,554,075,490,231.90/1,431,311.76
  6. Step 6: Final answer
    x = 1,085,770.08

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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.