Home / 499,510,155.20-689,241,785.84-313,738,851.92

Finding the Fourth Proportional to 499,510,155.20, 689,241,785.84 and 313,738,851.92

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Solution

The fourth proportional to 499,510,155.20, 689,241,785.84 and 313,738,851.92 is: 432,907,968.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,510,155.20 : 689,241,785.84 = 313,738,851.92 : x
  2. Step 2: Convert to fraction form
    499,510,155.20/689,241,785.84 = 313,738,851.92/x
  3. Step 3: Cross multiply
    499,510,155.20x = 689,241,785.84 × 313,738,851.92
  4. Step 4: Simplify right side
    499,510,155.20x = 216,241,926,584,732,128
  5. Step 5: Solve for x
    x = 216,241,926,584,732,128/499,510,155.20
  6. Step 6: Final answer
    x = 432,907,968.60

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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.