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Finding the Fourth Proportional to 554,502.20, 831,174.42 and 402,331.64

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Solution

The fourth proportional to 554,502.20, 831,174.42 and 402,331.64 is: 603,077.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,502.20 : 831,174.42 = 402,331.64 : x
  2. Step 2: Convert to fraction form
    554,502.20/831,174.42 = 402,331.64/x
  3. Step 3: Cross multiply
    554,502.20x = 831,174.42 × 402,331.64
  4. Step 4: Simplify right side
    554,502.20x = 334,407,767,524.65
  5. Step 5: Solve for x
    x = 334,407,767,524.65/554,502.20
  6. Step 6: Final answer
    x = 603,077.44

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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.