Home / 430,072,719.76-645,109,109-171,469,543.36

Finding the Fourth Proportional to 430,072,719.76, 645,109,109 and 171,469,543.36

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Solution

The fourth proportional to 430,072,719.76, 645,109,109 and 171,469,543.36 is: 257,204,326.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,072,719.76 : 645,109,109 = 171,469,543.36 : x
  2. Step 2: Convert to fraction form
    430,072,719.76/645,109,109 = 171,469,543.36/x
  3. Step 3: Cross multiply
    430,072,719.76x = 645,109,109 × 171,469,543.36
  4. Step 4: Simplify right side
    430,072,719.76x = 110,616,564,337,606,480
  5. Step 5: Solve for x
    x = 110,616,564,337,606,480/430,072,719.76
  6. Step 6: Final answer
    x = 257,204,326.75

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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.