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Finding the Fourth Proportional to 431,569,673.55, 647,354,510.33 and 431,569,673.55

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Solution

The fourth proportional to 431,569,673.55, 647,354,510.33 and 431,569,673.55 is: 647,354,510.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,569,673.55 : 647,354,510.33 = 431,569,673.55 : x
  2. Step 2: Convert to fraction form
    431,569,673.55/647,354,510.33 = 431,569,673.55/x
  3. Step 3: Cross multiply
    431,569,673.55x = 647,354,510.33 × 431,569,673.55
  4. Step 4: Simplify right side
    431,569,673.55x = 279,378,574,692,080,384
  5. Step 5: Solve for x
    x = 279,378,574,692,080,384/431,569,673.55
  6. Step 6: Final answer
    x = 647,354,510.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.