Home / 1,240,816.85-1,712,289.96-689,530.69

Finding the Fourth Proportional to 1,240,816.85, 1,712,289.96 and 689,530.69

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Solution

The fourth proportional to 1,240,816.85, 1,712,289.96 and 689,530.69 is: 951,531.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,816.85 : 1,712,289.96 = 689,530.69 : x
  2. Step 2: Convert to fraction form
    1,240,816.85/1,712,289.96 = 689,530.69/x
  3. Step 3: Cross multiply
    1,240,816.85x = 1,712,289.96 × 689,530.69
  4. Step 4: Simplify right side
    1,240,816.85x = 1,180,676,477,598.87
  5. Step 5: Solve for x
    x = 1,180,676,477,598.87/1,240,816.85
  6. Step 6: Final answer
    x = 951,531.63

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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.