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Finding the Fourth Proportional to 708,664.91, 978,891.06 and 525,275.24

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Solution

The fourth proportional to 708,664.91, 978,891.06 and 525,275.24 is: 725,571.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,664.91 : 978,891.06 = 525,275.24 : x
  2. Step 2: Convert to fraction form
    708,664.91/978,891.06 = 525,275.24/x
  3. Step 3: Cross multiply
    708,664.91x = 978,891.06 × 525,275.24
  4. Step 4: Simplify right side
    708,664.91x = 514,187,236,475.35
  5. Step 5: Solve for x
    x = 514,187,236,475.35/708,664.91
  6. Step 6: Final answer
    x = 725,571.75

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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.