Home / 648,045,911.47-894,207,154.51-393,594,856.57

Finding the Fourth Proportional to 648,045,911.47, 894,207,154.51 and 393,594,856.57

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Solution

The fourth proportional to 648,045,911.47, 894,207,154.51 and 393,594,856.57 is: 543,102,472.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,045,911.47 : 894,207,154.51 = 393,594,856.57 : x
  2. Step 2: Convert to fraction form
    648,045,911.47/894,207,154.51 = 393,594,856.57/x
  3. Step 3: Cross multiply
    648,045,911.47x = 894,207,154.51 × 393,594,856.57
  4. Step 4: Simplify right side
    648,045,911.47x = 351,955,336,723,231,296
  5. Step 5: Solve for x
    x = 351,955,336,723,231,296/648,045,911.47
  6. Step 6: Final answer
    x = 543,102,472.36

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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.