Home / 648,045,916.38-894,207,161.28-393,594,861.48

Finding the Fourth Proportional to 648,045,916.38, 894,207,161.28 and 393,594,861.48

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Solution

The fourth proportional to 648,045,916.38, 894,207,161.28 and 393,594,861.48 is: 543,102,479.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,045,916.38 : 894,207,161.28 = 393,594,861.48 : x
  2. Step 2: Convert to fraction form
    648,045,916.38/894,207,161.28 = 393,594,861.48/x
  3. Step 3: Cross multiply
    648,045,916.38x = 894,207,161.28 × 393,594,861.48
  4. Step 4: Simplify right side
    648,045,916.38x = 351,955,343,778,425,600
  5. Step 5: Solve for x
    x = 351,955,343,778,425,600/648,045,916.38
  6. Step 6: Final answer
    x = 543,102,479.13

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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.