Home / 431,314,940.34-646,972,378.75-103,790,488.25

Finding the Fourth Proportional to 431,314,940.34, 646,972,378.75 and 103,790,488.25

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Solution

The fourth proportional to 431,314,940.34, 646,972,378.75 and 103,790,488.25 is: 155,685,724.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,314,940.34 : 646,972,378.75 = 103,790,488.25 : x
  2. Step 2: Convert to fraction form
    431,314,940.34/646,972,378.75 = 103,790,488.25/x
  3. Step 3: Cross multiply
    431,314,940.34x = 646,972,378.75 × 103,790,488.25
  4. Step 4: Simplify right side
    431,314,940.34x = 67,149,579,076,473,592
  5. Step 5: Solve for x
    x = 67,149,579,076,473,592/431,314,940.34
  6. Step 6: Final answer
    x = 155,685,724.74

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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.