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Finding the Fourth Proportional to 535,915.80, 802,491.30 and 425,323.80

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Solution

The fourth proportional to 535,915.80, 802,491.30 and 425,323.80 is: 636,888.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,915.80 : 802,491.30 = 425,323.80 : x
  2. Step 2: Convert to fraction form
    535,915.80/802,491.30 = 425,323.80/x
  3. Step 3: Cross multiply
    535,915.80x = 802,491.30 × 425,323.80
  4. Step 4: Simplify right side
    535,915.80x = 341,318,649,182.94
  5. Step 5: Solve for x
    x = 341,318,649,182.94/535,915.80
  6. Step 6: Final answer
    x = 636,888.57

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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.