Home / 1,221,595.78-1,685,803.60-712,396.56

Finding the Fourth Proportional to 1,221,595.78, 1,685,803.60 and 712,396.56

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Solution

The fourth proportional to 1,221,595.78, 1,685,803.60 and 712,396.56 is: 983,108.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,595.78 : 1,685,803.60 = 712,396.56 : x
  2. Step 2: Convert to fraction form
    1,221,595.78/1,685,803.60 = 712,396.56/x
  3. Step 3: Cross multiply
    1,221,595.78x = 1,685,803.60 × 712,396.56
  4. Step 4: Simplify right side
    1,221,595.78x = 1,200,960,685,475.62
  5. Step 5: Solve for x
    x = 1,200,960,685,475.62/1,221,595.78
  6. Step 6: Final answer
    x = 983,108.08

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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.