Home / 661,376.16-911,079.36-479,553.84

Finding the Fourth Proportional to 661,376.16, 911,079.36 and 479,553.84

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Solution

The fourth proportional to 661,376.16, 911,079.36 and 479,553.84 is: 660,609.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,376.16 : 911,079.36 = 479,553.84 : x
  2. Step 2: Convert to fraction form
    661,376.16/911,079.36 = 479,553.84/x
  3. Step 3: Cross multiply
    661,376.16x = 911,079.36 × 479,553.84
  4. Step 4: Simplify right side
    661,376.16x = 436,911,605,632.74
  5. Step 5: Solve for x
    x = 436,911,605,632.74/661,376.16
  6. Step 6: Final answer
    x = 660,609.85

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1.5x scale

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.