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Finding the Fourth Proportional to 605,103,679.80, 907,655,519.70 and 519,010,237.80

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Solution

The fourth proportional to 605,103,679.80, 907,655,519.70 and 519,010,237.80 is: 778,515,356.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,103,679.80 : 907,655,519.70 = 519,010,237.80 : x
  2. Step 2: Convert to fraction form
    605,103,679.80/907,655,519.70 = 519,010,237.80/x
  3. Step 3: Cross multiply
    605,103,679.80x = 907,655,519.70 × 519,010,237.80
  4. Step 4: Simplify right side
    605,103,679.80x = 471,082,507,119,979,648
  5. Step 5: Solve for x
    x = 471,082,507,119,979,648/605,103,679.80
  6. Step 6: Final answer
    x = 778,515,356.70

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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.