Home / 842,149,045.80-1,263,307,986.90-289,378,672.20

Finding the Fourth Proportional to 842,149,045.80, 1,263,307,986.90 and 289,378,672.20

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Solution

The fourth proportional to 842,149,045.80, 1,263,307,986.90 and 289,378,672.20 is: 434,097,016.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,149,045.80 : 1,263,307,986.90 = 289,378,672.20 : x
  2. Step 2: Convert to fraction form
    842,149,045.80/1,263,307,986.90 = 289,378,672.20/x
  3. Step 3: Cross multiply
    842,149,045.80x = 1,263,307,986.90 × 289,378,672.20
  4. Step 4: Simplify right side
    842,149,045.80x = 365,574,387,828,777,024
  5. Step 5: Solve for x
    x = 365,574,387,828,777,024/842,149,045.80
  6. Step 6: Final answer
    x = 434,097,016.02

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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.