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Finding the Fourth Proportional to 519,492,866.72, 716,891,295.22 and 281,336,116.65

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Solution

The fourth proportional to 519,492,866.72, 716,891,295.22 and 281,336,116.65 is: 388,239,042.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,492,866.72 : 716,891,295.22 = 281,336,116.65 : x
  2. Step 2: Convert to fraction form
    519,492,866.72/716,891,295.22 = 281,336,116.65/x
  3. Step 3: Cross multiply
    519,492,866.72x = 716,891,295.22 × 281,336,116.65
  4. Step 4: Simplify right side
    519,492,866.72x = 201,687,413,056,013,472
  5. Step 5: Solve for x
    x = 201,687,413,056,013,472/519,492,866.72
  6. Step 6: Final answer
    x = 388,239,042.30

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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.