Home / 905,439.20-1,357,314.57-305,981.15

Finding the Fourth Proportional to 905,439.20, 1,357,314.57 and 305,981.15

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Solution

The fourth proportional to 905,439.20, 1,357,314.57 and 305,981.15 is: 458,686.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,439.20 : 1,357,314.57 = 305,981.15 : x
  2. Step 2: Convert to fraction form
    905,439.20/1,357,314.57 = 305,981.15/x
  3. Step 3: Cross multiply
    905,439.20x = 1,357,314.57 × 305,981.15
  4. Step 4: Simplify right side
    905,439.20x = 415,312,666,253.78
  5. Step 5: Solve for x
    x = 415,312,666,253.78/905,439.20
  6. Step 6: Final answer
    x = 458,686.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.