Home / 426,426,659,017.96-639,639,949,685.28-187,661,308,005.76

Finding the Fourth Proportional to 426,426,659,017.96, 639,639,949,685.28 and 187,661,308,005.76

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Solution

The fourth proportional to 426,426,659,017.96, 639,639,949,685.28 and 187,661,308,005.76 is: 281,491,944,915.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,426,659,017.96 : 639,639,949,685.28 = 187,661,308,005.76 : x
  2. Step 2: Convert to fraction form
    426,426,659,017.96/639,639,949,685.28 = 187,661,308,005.76/x
  3. Step 3: Cross multiply
    426,426,659,017.96x = 639,639,949,685.28 × 187,661,308,005.76
  4. Step 4: Simplify right side
    426,426,659,017.96x = 120,035,669,610,678,173,302,784
  5. Step 5: Solve for x
    x = 120,035,669,610,678,173,302,784/426,426,659,017.96
  6. Step 6: Final answer
    x = 281,491,944,915.25

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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.