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Finding the Fourth Proportional to 548,840.70, 823,261.05 and 360,491.40

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Solution

The fourth proportional to 548,840.70, 823,261.05 and 360,491.40 is: 540,737.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,840.70 : 823,261.05 = 360,491.40 : x
  2. Step 2: Convert to fraction form
    548,840.70/823,261.05 = 360,491.40/x
  3. Step 3: Cross multiply
    548,840.70x = 823,261.05 × 360,491.40
  4. Step 4: Simplify right side
    548,840.70x = 296,778,528,479.97
  5. Step 5: Solve for x
    x = 296,778,528,479.97/548,840.70
  6. Step 6: Final answer
    x = 540,737.10

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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.