Home / 918,623.49-1,378,083.06-319,754.85

Finding the Fourth Proportional to 918,623.49, 1,378,083.06 and 319,754.85

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Solution

The fourth proportional to 918,623.49, 1,378,083.06 and 319,754.85 is: 479,683.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,623.49 : 1,378,083.06 = 319,754.85 : x
  2. Step 2: Convert to fraction form
    918,623.49/1,378,083.06 = 319,754.85/x
  3. Step 3: Cross multiply
    918,623.49x = 1,378,083.06 × 319,754.85
  4. Step 4: Simplify right side
    918,623.49x = 440,648,742,137.84
  5. Step 5: Solve for x
    x = 440,648,742,137.84/918,623.49
  6. Step 6: Final answer
    x = 479,683.73

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1.5x scale

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.