Home / 1,320,113,515.05-1,980,170,639.52-490,958,822.16

Finding the Fourth Proportional to 1,320,113,515.05, 1,980,170,639.52 and 490,958,822.16

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Solution

The fourth proportional to 1,320,113,515.05, 1,980,170,639.52 and 490,958,822.16 is: 736,438,369.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,113,515.05 : 1,980,170,639.52 = 490,958,822.16 : x
  2. Step 2: Convert to fraction form
    1,320,113,515.05/1,980,170,639.52 = 490,958,822.16/x
  3. Step 3: Cross multiply
    1,320,113,515.05x = 1,980,170,639.52 × 490,958,822.16
  4. Step 4: Simplify right side
    1,320,113,515.05x = 972,182,244,854,553,216
  5. Step 5: Solve for x
    x = 972,182,244,854,553,216/1,320,113,515.05
  6. Step 6: Final answer
    x = 736,438,369.71

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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.