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Finding the Fourth Proportional to 647,508,258.72, 892,996,683.84 and 458,963,621.28

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Solution

The fourth proportional to 647,508,258.72, 892,996,683.84 and 458,963,621.28 is: 632,969,520.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,508,258.72 : 892,996,683.84 = 458,963,621.28 : x
  2. Step 2: Convert to fraction form
    647,508,258.72/892,996,683.84 = 458,963,621.28/x
  3. Step 3: Cross multiply
    647,508,258.72x = 892,996,683.84 × 458,963,621.28
  4. Step 4: Simplify right side
    647,508,258.72x = 409,852,991,806,237,632
  5. Step 5: Solve for x
    x = 409,852,991,806,237,632/647,508,258.72
  6. Step 6: Final answer
    x = 632,969,520.14

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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.