Home / 925,315.96-1,386,388.32-621,140.68

Finding the Fourth Proportional to 925,315.96, 1,386,388.32 and 621,140.68

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Solution

The fourth proportional to 925,315.96, 1,386,388.32 and 621,140.68 is: 930,646.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    925,315.96 : 1,386,388.32 = 621,140.68 : x
  2. Step 2: Convert to fraction form
    925,315.96/1,386,388.32 = 621,140.68/x
  3. Step 3: Cross multiply
    925,315.96x = 1,386,388.32 × 621,140.68
  4. Step 4: Simplify right side
    925,315.96x = 861,142,183,828.86
  5. Step 5: Solve for x
    x = 861,142,183,828.86/925,315.96
  6. Step 6: Final answer
    x = 930,646.63

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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.