Home / 518,077,406.10-777,030,987.42-186,015,675.36

Finding the Fourth Proportional to 518,077,406.10, 777,030,987.42 and 186,015,675.36

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Solution

The fourth proportional to 518,077,406.10, 777,030,987.42 and 186,015,675.36 is: 278,992,950.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,077,406.10 : 777,030,987.42 = 186,015,675.36 : x
  2. Step 2: Convert to fraction form
    518,077,406.10/777,030,987.42 = 186,015,675.36/x
  3. Step 3: Cross multiply
    518,077,406.10x = 777,030,987.42 × 186,015,675.36
  4. Step 4: Simplify right side
    518,077,406.10x = 144,539,943,900,578,976
  5. Step 5: Solve for x
    x = 144,539,943,900,578,976/518,077,406.10
  6. Step 6: Final answer
    x = 278,992,950.09

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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.