Home / 490,040,428.60-735,060,642.90-217,438,751.80

Finding the Fourth Proportional to 490,040,428.60, 735,060,642.90 and 217,438,751.80

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Solution

The fourth proportional to 490,040,428.60, 735,060,642.90 and 217,438,751.80 is: 326,158,127.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,040,428.60 : 735,060,642.90 = 217,438,751.80 : x
  2. Step 2: Convert to fraction form
    490,040,428.60/735,060,642.90 = 217,438,751.80/x
  3. Step 3: Cross multiply
    490,040,428.60x = 735,060,642.90 × 217,438,751.80
  4. Step 4: Simplify right side
    490,040,428.60x = 159,830,668,689,481,536
  5. Step 5: Solve for x
    x = 159,830,668,689,481,536/490,040,428.60
  6. Step 6: Final answer
    x = 326,158,127.70

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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.