Home / 424,008.12-634,962.42-311,421.36

Finding the Fourth Proportional to 424,008.12, 634,962.42 and 311,421.36

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Solution

The fourth proportional to 424,008.12, 634,962.42 and 311,421.36 is: 466,361.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,008.12 : 634,962.42 = 311,421.36 : x
  2. Step 2: Convert to fraction form
    424,008.12/634,962.42 = 311,421.36/x
  3. Step 3: Cross multiply
    424,008.12x = 634,962.42 × 311,421.36
  4. Step 4: Simplify right side
    424,008.12x = 197,740,860,385.29
  5. Step 5: Solve for x
    x = 197,740,860,385.29/424,008.12
  6. Step 6: Final answer
    x = 466,361.02

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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.