Home / 426,352,515.60-639,589,779.12-131,272,602.36

Finding the Fourth Proportional to 426,352,515.60, 639,589,779.12 and 131,272,602.36

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Solution

The fourth proportional to 426,352,515.60, 639,589,779.12 and 131,272,602.36 is: 196,927,687.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,352,515.60 : 639,589,779.12 = 131,272,602.36 : x
  2. Step 2: Convert to fraction form
    426,352,515.60/639,589,779.12 = 131,272,602.36/x
  3. Step 3: Cross multiply
    426,352,515.60x = 639,589,779.12 × 131,272,602.36
  4. Step 4: Simplify right side
    426,352,515.60x = 83,960,614,747,939,984
  5. Step 5: Solve for x
    x = 83,960,614,747,939,984/426,352,515.60
  6. Step 6: Final answer
    x = 196,927,687.01

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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.