Home / 1,248,178,615.60-1,872,491,872.20-521,240,810.80

Finding the Fourth Proportional to 1,248,178,615.60, 1,872,491,872.20 and 521,240,810.80

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Solution

The fourth proportional to 1,248,178,615.60, 1,872,491,872.20 and 521,240,810.80 is: 781,954,737.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,248,178,615.60 : 1,872,491,872.20 = 521,240,810.80 : x
  2. Step 2: Convert to fraction form
    1,248,178,615.60/1,872,491,872.20 = 521,240,810.80/x
  3. Step 3: Cross multiply
    1,248,178,615.60x = 1,872,491,872.20 × 521,240,810.80
  4. Step 4: Simplify right side
    1,248,178,615.60x = 976,019,181,681,938,048
  5. Step 5: Solve for x
    x = 976,019,181,681,938,048/1,248,178,615.60
  6. Step 6: Final answer
    x = 781,954,737.47

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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.