Home / 1,240,814.85-1,712,287.20-689,528.69

Finding the Fourth Proportional to 1,240,814.85, 1,712,287.20 and 689,528.69

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Solution

The fourth proportional to 1,240,814.85, 1,712,287.20 and 689,528.69 is: 951,528.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,814.85 : 1,712,287.20 = 689,528.69 : x
  2. Step 2: Convert to fraction form
    1,240,814.85/1,712,287.20 = 689,528.69/x
  3. Step 3: Cross multiply
    1,240,814.85x = 1,712,287.20 × 689,528.69
  4. Step 4: Simplify right side
    1,240,814.85x = 1,180,671,149,919.77
  5. Step 5: Solve for x
    x = 1,180,671,149,919.77/1,240,814.85
  6. Step 6: Final answer
    x = 951,528.87

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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.