Home / 1,315,156,025.72-1,969,988,849.76-788,856,029.30

Finding the Fourth Proportional to 1,315,156,025.72, 1,969,988,849.76 and 788,856,029.30

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Solution

The fourth proportional to 1,315,156,025.72, 1,969,988,849.76 and 788,856,029.30 is: 1,181,637,426.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,156,025.72 : 1,969,988,849.76 = 788,856,029.30 : x
  2. Step 2: Convert to fraction form
    1,315,156,025.72/1,969,988,849.76 = 788,856,029.30/x
  3. Step 3: Cross multiply
    1,315,156,025.72x = 1,969,988,849.76 × 788,856,029.30
  4. Step 4: Simplify right side
    1,315,156,025.72x = 1,554,037,581,786,947,840
  5. Step 5: Solve for x
    x = 1,554,037,581,786,947,840/1,315,156,025.72
  6. Step 6: Final answer
    x = 1,181,637,426.58

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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.