Home / 520,378,819,999.20-779,644,778,089.70-217,523,810,227.70

Finding the Fourth Proportional to 520,378,819,999.20, 779,644,778,089.70 and 217,523,810,227.70

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Solution

The fourth proportional to 520,378,819,999.20, 779,644,778,089.70 and 217,523,810,227.70 is: 325,899,702,748.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,378,819,999.20 : 779,644,778,089.70 = 217,523,810,227.70 : x
  2. Step 2: Convert to fraction form
    520,378,819,999.20/779,644,778,089.70 = 217,523,810,227.70/x
  3. Step 3: Cross multiply
    520,378,819,999.20x = 779,644,778,089.70 × 217,523,810,227.70
  4. Step 4: Simplify right side
    520,378,819,999.20x = 169,591,302,754,201,195,511,808
  5. Step 5: Solve for x
    x = 169,591,302,754,201,195,511,808/520,378,819,999.20
  6. Step 6: Final answer
    x = 325,899,702,748.21

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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.