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Finding the Fourth Proportional to 603,816.96, 832,389.21 and 421,964.28

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Solution

The fourth proportional to 603,816.96, 832,389.21 and 421,964.28 is: 581,697.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,816.96 : 832,389.21 = 421,964.28 : x
  2. Step 2: Convert to fraction form
    603,816.96/832,389.21 = 421,964.28/x
  3. Step 3: Cross multiply
    603,816.96x = 832,389.21 × 421,964.28
  4. Step 4: Simplify right side
    603,816.96x = 351,238,513,677.42
  5. Step 5: Solve for x
    x = 351,238,513,677.42/603,816.96
  6. Step 6: Final answer
    x = 581,697.00

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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.