Home / 768,672,628.80-1,060,844,094.72-438,697,135.68

Finding the Fourth Proportional to 768,672,628.80, 1,060,844,094.72 and 438,697,135.68

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Solution

The fourth proportional to 768,672,628.80, 1,060,844,094.72 and 438,697,135.68 is: 605,445,346.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,672,628.80 : 1,060,844,094.72 = 438,697,135.68 : x
  2. Step 2: Convert to fraction form
    768,672,628.80/1,060,844,094.72 = 438,697,135.68/x
  3. Step 3: Cross multiply
    768,672,628.80x = 1,060,844,094.72 × 438,697,135.68
  4. Step 4: Simplify right side
    768,672,628.80x = 465,389,265,756,706,624
  5. Step 5: Solve for x
    x = 465,389,265,756,706,624/768,672,628.80
  6. Step 6: Final answer
    x = 605,445,346.07

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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.