Home / 780,777,655.72-1,171,360,324.56-387,489,061.60

Finding the Fourth Proportional to 780,777,655.72, 1,171,360,324.56 and 387,489,061.60

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Solution

The fourth proportional to 780,777,655.72, 1,171,360,324.56 and 387,489,061.60 is: 581,329,792.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,777,655.72 : 1,171,360,324.56 = 387,489,061.60 : x
  2. Step 2: Convert to fraction form
    780,777,655.72/1,171,360,324.56 = 387,489,061.60/x
  3. Step 3: Cross multiply
    780,777,655.72x = 1,171,360,324.56 × 387,489,061.60
  4. Step 4: Simplify right side
    780,777,655.72x = 453,889,312,959,225,856
  5. Step 5: Solve for x
    x = 453,889,312,959,225,856/780,777,655.72
  6. Step 6: Final answer
    x = 581,329,792.98

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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.