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Finding the Fourth Proportional to 620,209,963.73, 855,908,006.92 and 341,769,423.40

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Solution

The fourth proportional to 620,209,963.73, 855,908,006.92 and 341,769,423.40 is: 471,651,864.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,209,963.73 : 855,908,006.92 = 341,769,423.40 : x
  2. Step 2: Convert to fraction form
    620,209,963.73/855,908,006.92 = 341,769,423.40/x
  3. Step 3: Cross multiply
    620,209,963.73x = 855,908,006.92 × 341,769,423.40
  4. Step 4: Simplify right side
    620,209,963.73x = 292,523,186,005,504,256
  5. Step 5: Solve for x
    x = 292,523,186,005,504,256/620,209,963.73
  6. Step 6: Final answer
    x = 471,651,864.87

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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.