Home / 1,028,029,812.78-1,542,191,138.79-319,039,633.74

Finding the Fourth Proportional to 1,028,029,812.78, 1,542,191,138.79 and 319,039,633.74

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Solution

The fourth proportional to 1,028,029,812.78, 1,542,191,138.79 and 319,039,633.74 is: 478,604,890.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,028,029,812.78 : 1,542,191,138.79 = 319,039,633.74 : x
  2. Step 2: Convert to fraction form
    1,028,029,812.78/1,542,191,138.79 = 319,039,633.74/x
  3. Step 3: Cross multiply
    1,028,029,812.78x = 1,542,191,138.79 × 319,039,633.74
  4. Step 4: Simplify right side
    1,028,029,812.78x = 492,020,096,076,635,136
  5. Step 5: Solve for x
    x = 492,020,096,076,635,136/1,028,029,812.78
  6. Step 6: Final answer
    x = 478,604,890.60

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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.