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Finding the Fourth Proportional to 947,347.12, 1,307,300.16 and 517,642

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Solution

The fourth proportional to 947,347.12, 1,307,300.16 and 517,642 is: 714,324.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    947,347.12 : 1,307,300.16 = 517,642 : x
  2. Step 2: Convert to fraction form
    947,347.12/1,307,300.16 = 517,642/x
  3. Step 3: Cross multiply
    947,347.12x = 1,307,300.16 × 517,642
  4. Step 4: Simplify right side
    947,347.12x = 676,713,469,422.72
  5. Step 5: Solve for x
    x = 676,713,469,422.72/947,347.12
  6. Step 6: Final answer
    x = 714,324.72

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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.