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Finding the Fourth Proportional to 655,927.20, 983,890.80 and 445,975.20

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Solution

The fourth proportional to 655,927.20, 983,890.80 and 445,975.20 is: 668,962.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,927.20 : 983,890.80 = 445,975.20 : x
  2. Step 2: Convert to fraction form
    655,927.20/983,890.80 = 445,975.20/x
  3. Step 3: Cross multiply
    655,927.20x = 983,890.80 × 445,975.20
  4. Step 4: Simplify right side
    655,927.20x = 438,790,896,308.16
  5. Step 5: Solve for x
    x = 438,790,896,308.16/655,927.20
  6. Step 6: Final answer
    x = 668,962.80

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Similar ratio
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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.