Home / 915,900.48-1,372,116.64-611,376.41

Finding the Fourth Proportional to 915,900.48, 1,372,116.64 and 611,376.41

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Solution

The fourth proportional to 915,900.48, 1,372,116.64 and 611,376.41 is: 915,907.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,900.48 : 1,372,116.64 = 611,376.41 : x
  2. Step 2: Convert to fraction form
    915,900.48/1,372,116.64 = 611,376.41/x
  3. Step 3: Cross multiply
    915,900.48x = 1,372,116.64 × 611,376.41
  4. Step 4: Simplify right side
    915,900.48x = 838,879,747,366.31
  5. Step 5: Solve for x
    x = 838,879,747,366.31/915,900.48
  6. Step 6: Final answer
    x = 915,907.09

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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.