Home / 782,783,141.72-1,175,025,516.38-316,765,407.45

Finding the Fourth Proportional to 782,783,141.72, 1,175,025,516.38 and 316,765,407.45

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Solution

The fourth proportional to 782,783,141.72, 1,175,025,516.38 and 316,765,407.45 is: 475,492,402.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,783,141.72 : 1,175,025,516.38 = 316,765,407.45 : x
  2. Step 2: Convert to fraction form
    782,783,141.72/1,175,025,516.38 = 316,765,407.45/x
  3. Step 3: Cross multiply
    782,783,141.72x = 1,175,025,516.38 × 316,765,407.45
  4. Step 4: Simplify right side
    782,783,141.72x = 372,207,436,464,283,584
  5. Step 5: Solve for x
    x = 372,207,436,464,283,584/782,783,141.72
  6. Step 6: Final answer
    x = 475,492,402.21

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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.