Home / 786,139,043.20-1,084,834,014.72-428,885,549.44

Finding the Fourth Proportional to 786,139,043.20, 1,084,834,014.72 and 428,885,549.44

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Solution

The fourth proportional to 786,139,043.20, 1,084,834,014.72 and 428,885,549.44 is: 591,841,400.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,139,043.20 : 1,084,834,014.72 = 428,885,549.44 : x
  2. Step 2: Convert to fraction form
    786,139,043.20/1,084,834,014.72 = 428,885,549.44/x
  3. Step 3: Cross multiply
    786,139,043.20x = 1,084,834,014.72 × 428,885,549.44
  4. Step 4: Simplify right side
    786,139,043.20x = 465,269,632,454,388,288
  5. Step 5: Solve for x
    x = 465,269,632,454,388,288/786,139,043.20
  6. Step 6: Final answer
    x = 591,841,400.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.