Home / 687,401.46-1,030,768.86-403,184.85

Finding the Fourth Proportional to 687,401.46, 1,030,768.86 and 403,184.85

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Solution

The fourth proportional to 687,401.46, 1,030,768.86 and 403,184.85 is: 604,581.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,401.46 : 1,030,768.86 = 403,184.85 : x
  2. Step 2: Convert to fraction form
    687,401.46/1,030,768.86 = 403,184.85/x
  3. Step 3: Cross multiply
    687,401.46x = 1,030,768.86 × 403,184.85
  4. Step 4: Simplify right side
    687,401.46x = 415,590,388,203.77
  5. Step 5: Solve for x
    x = 415,590,388,203.77/687,401.46
  6. Step 6: Final answer
    x = 604,581.77

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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.