Home / 665,096.07-911,185.02-640,188.42

Finding the Fourth Proportional to 665,096.07, 911,185.02 and 640,188.42

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Solution

The fourth proportional to 665,096.07, 911,185.02 and 640,188.42 is: 877,061.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,096.07 : 911,185.02 = 640,188.42 : x
  2. Step 2: Convert to fraction form
    665,096.07/911,185.02 = 640,188.42/x
  3. Step 3: Cross multiply
    665,096.07x = 911,185.02 × 640,188.42
  4. Step 4: Simplify right side
    665,096.07x = 583,330,098,281.47
  5. Step 5: Solve for x
    x = 583,330,098,281.47/665,096.07
  6. Step 6: Final answer
    x = 877,061.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.