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Finding the Fourth Proportional to 538,087.70, 807,131.55 and 480,026.90

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Solution

The fourth proportional to 538,087.70, 807,131.55 and 480,026.90 is: 720,040.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,087.70 : 807,131.55 = 480,026.90 : x
  2. Step 2: Convert to fraction form
    538,087.70/807,131.55 = 480,026.90/x
  3. Step 3: Cross multiply
    538,087.70x = 807,131.55 × 480,026.90
  4. Step 4: Simplify right side
    538,087.70x = 387,444,855,838.70
  5. Step 5: Solve for x
    x = 387,444,855,838.70/538,087.70
  6. Step 6: Final answer
    x = 720,040.35

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Similar ratio
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1.5x scale

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.