Home / 260,497,450.47-390,663,211.17-85,579,882.59

Finding the Fourth Proportional to 260,497,450.47, 390,663,211.17 and 85,579,882.59

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Solution

The fourth proportional to 260,497,450.47, 390,663,211.17 and 85,579,882.59 is: 128,342,567.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,497,450.47 : 390,663,211.17 = 85,579,882.59 : x
  2. Step 2: Convert to fraction form
    260,497,450.47/390,663,211.17 = 85,579,882.59/x
  3. Step 3: Cross multiply
    260,497,450.47x = 390,663,211.17 × 85,579,882.59
  4. Step 4: Simplify right side
    260,497,450.47x = 33,432,911,744,160,980
  5. Step 5: Solve for x
    x = 33,432,911,744,160,980/260,497,450.47
  6. Step 6: Final answer
    x = 128,342,567.97

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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.