Home / 1,320,113,490.30-1,980,170,602.38-490,958,797.44

Finding the Fourth Proportional to 1,320,113,490.30, 1,980,170,602.38 and 490,958,797.44

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Solution

The fourth proportional to 1,320,113,490.30, 1,980,170,602.38 and 490,958,797.44 is: 736,438,332.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,113,490.30 : 1,980,170,602.38 = 490,958,797.44 : x
  2. Step 2: Convert to fraction form
    1,320,113,490.30/1,980,170,602.38 = 490,958,797.44/x
  3. Step 3: Cross multiply
    1,320,113,490.30x = 1,980,170,602.38 × 490,958,797.44
  4. Step 4: Simplify right side
    1,320,113,490.30x = 972,182,177,670,525,312
  5. Step 5: Solve for x
    x = 972,182,177,670,525,312/1,320,113,490.30
  6. Step 6: Final answer
    x = 736,438,332.62

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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.