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Finding the Fourth Proportional to 554,498.20, 831,168.42 and 402,327.64

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Solution

The fourth proportional to 554,498.20, 831,168.42 and 402,327.64 is: 603,071.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,498.20 : 831,168.42 = 402,327.64 : x
  2. Step 2: Convert to fraction form
    554,498.20/831,168.42 = 402,327.64/x
  3. Step 3: Cross multiply
    554,498.20x = 831,168.42 × 402,327.64
  4. Step 4: Simplify right side
    554,498.20x = 334,402,028,861.13
  5. Step 5: Solve for x
    x = 334,402,028,861.13/554,498.20
  6. Step 6: Final answer
    x = 603,071.44

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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.