Home / 763,105.05-1,144,819.49-289,779.93

Finding the Fourth Proportional to 763,105.05, 1,144,819.49 and 289,779.93

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Solution

The fourth proportional to 763,105.05, 1,144,819.49 and 289,779.93 is: 434,731.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,105.05 : 1,144,819.49 = 289,779.93 : x
  2. Step 2: Convert to fraction form
    763,105.05/1,144,819.49 = 289,779.93/x
  3. Step 3: Cross multiply
    763,105.05x = 1,144,819.49 × 289,779.93
  4. Step 4: Simplify right side
    763,105.05x = 331,745,710,225.94
  5. Step 5: Solve for x
    x = 331,745,710,225.94/763,105.05
  6. Step 6: Final answer
    x = 434,731.38

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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.