Home / 680,779.52-1,021,170.56-280,981.76

Finding the Fourth Proportional to 680,779.52, 1,021,170.56 and 280,981.76

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Solution

The fourth proportional to 680,779.52, 1,021,170.56 and 280,981.76 is: 421,473.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,779.52 : 1,021,170.56 = 280,981.76 : x
  2. Step 2: Convert to fraction form
    680,779.52/1,021,170.56 = 280,981.76/x
  3. Step 3: Cross multiply
    680,779.52x = 1,021,170.56 × 280,981.76
  4. Step 4: Simplify right side
    680,779.52x = 286,930,301,208.99
  5. Step 5: Solve for x
    x = 286,930,301,208.99/680,779.52
  6. Step 6: Final answer
    x = 421,473.17

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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.