Home / 498,014,015.28-687,319,934.88-289,170,151.77

Finding the Fourth Proportional to 498,014,015.28, 687,319,934.88 and 289,170,151.77

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Solution

The fourth proportional to 498,014,015.28, 687,319,934.88 and 289,170,151.77 is: 399,089,993.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,014,015.28 : 687,319,934.88 = 289,170,151.77 : x
  2. Step 2: Convert to fraction form
    498,014,015.28/687,319,934.88 = 289,170,151.77/x
  3. Step 3: Cross multiply
    498,014,015.28x = 687,319,934.88 × 289,170,151.77
  4. Step 4: Simplify right side
    498,014,015.28x = 198,752,409,885,829,920
  5. Step 5: Solve for x
    x = 198,752,409,885,829,920/498,014,015.28
  6. Step 6: Final answer
    x = 399,089,993.03

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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.