Home / 781,415.75-1,078,521.27-508,997.55

Finding the Fourth Proportional to 781,415.75, 1,078,521.27 and 508,997.55

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Solution

The fourth proportional to 781,415.75, 1,078,521.27 and 508,997.55 is: 702,525.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,415.75 : 1,078,521.27 = 508,997.55 : x
  2. Step 2: Convert to fraction form
    781,415.75/1,078,521.27 = 508,997.55/x
  3. Step 3: Cross multiply
    781,415.75x = 1,078,521.27 × 508,997.55
  4. Step 4: Simplify right side
    781,415.75x = 548,964,684,052.89
  5. Step 5: Solve for x
    x = 548,964,684,052.89/781,415.75
  6. Step 6: Final answer
    x = 702,525.75

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Double scale
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1.5x scale

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.