Home / 491,632,044.40-678,452,950.84-279,939,047.50

Finding the Fourth Proportional to 491,632,044.40, 678,452,950.84 and 279,939,047.50

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Solution

The fourth proportional to 491,632,044.40, 678,452,950.84 and 279,939,047.50 is: 386,316,300.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,632,044.40 : 678,452,950.84 = 279,939,047.50 : x
  2. Step 2: Convert to fraction form
    491,632,044.40/678,452,950.84 = 279,939,047.50/x
  3. Step 3: Cross multiply
    491,632,044.40x = 678,452,950.84 × 279,939,047.50
  4. Step 4: Simplify right side
    491,632,044.40x = 189,925,472,831,713,920
  5. Step 5: Solve for x
    x = 189,925,472,831,713,920/491,632,044.40
  6. Step 6: Final answer
    x = 386,316,300.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.