Home / 519,311,987.15-779,113,610.39-208,637,762.29

Finding the Fourth Proportional to 519,311,987.15, 779,113,610.39 and 208,637,762.29

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Solution

The fourth proportional to 519,311,987.15, 779,113,610.39 and 208,637,762.29 is: 313,015,151.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,311,987.15 : 779,113,610.39 = 208,637,762.29 : x
  2. Step 2: Convert to fraction form
    519,311,987.15/779,113,610.39 = 208,637,762.29/x
  3. Step 3: Cross multiply
    519,311,987.15x = 779,113,610.39 × 208,637,762.29
  4. Step 4: Simplify right side
    519,311,987.15x = 162,552,520,241,974,080
  5. Step 5: Solve for x
    x = 162,552,520,241,974,080/519,311,987.15
  6. Step 6: Final answer
    x = 313,015,151.33

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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.