Home / 442,868,407.80-664,302,611.70-319,786,672.20

Finding the Fourth Proportional to 442,868,407.80, 664,302,611.70 and 319,786,672.20

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Solution

The fourth proportional to 442,868,407.80, 664,302,611.70 and 319,786,672.20 is: 479,680,008.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,868,407.80 : 664,302,611.70 = 319,786,672.20 : x
  2. Step 2: Convert to fraction form
    442,868,407.80/664,302,611.70 = 319,786,672.20/x
  3. Step 3: Cross multiply
    442,868,407.80x = 664,302,611.70 × 319,786,672.20
  4. Step 4: Simplify right side
    442,868,407.80x = 212,435,121,529,311,808
  5. Step 5: Solve for x
    x = 212,435,121,529,311,808/442,868,407.80
  6. Step 6: Final answer
    x = 479,680,008.30

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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.