Home / 1,354,811.92-1,869,624.96-781,839.76

Finding the Fourth Proportional to 1,354,811.92, 1,869,624.96 and 781,839.76

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Solution

The fourth proportional to 1,354,811.92, 1,869,624.96 and 781,839.76 is: 1,078,929.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,354,811.92 : 1,869,624.96 = 781,839.76 : x
  2. Step 2: Convert to fraction form
    1,354,811.92/1,869,624.96 = 781,839.76/x
  3. Step 3: Cross multiply
    1,354,811.92x = 1,869,624.96 × 781,839.76
  4. Step 4: Simplify right side
    1,354,811.92x = 1,461,747,130,016.41
  5. Step 5: Solve for x
    x = 1,461,747,130,016.41/1,354,811.92
  6. Step 6: Final answer
    x = 1,078,929.93

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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.