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Finding the Fourth Proportional to 671,074.49, 925,729.88 and 398,948.84

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Solution

The fourth proportional to 671,074.49, 925,729.88 and 398,948.84 is: 550,339.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,074.49 : 925,729.88 = 398,948.84 : x
  2. Step 2: Convert to fraction form
    671,074.49/925,729.88 = 398,948.84/x
  3. Step 3: Cross multiply
    671,074.49x = 925,729.88 × 398,948.84
  4. Step 4: Simplify right side
    671,074.49x = 369,318,861,779.34
  5. Step 5: Solve for x
    x = 369,318,861,779.34/671,074.49
  6. Step 6: Final answer
    x = 550,339.59

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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.