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Finding the Fourth Proportional to 408,587.49, 563,868.93 and 340,490.46

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Solution

The fourth proportional to 408,587.49, 563,868.93 and 340,490.46 is: 469,892.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,587.49 : 563,868.93 = 340,490.46 : x
  2. Step 2: Convert to fraction form
    408,587.49/563,868.93 = 340,490.46/x
  3. Step 3: Cross multiply
    408,587.49x = 563,868.93 × 340,490.46
  4. Step 4: Simplify right side
    408,587.49x = 191,991,991,355.41
  5. Step 5: Solve for x
    x = 191,991,991,355.41/408,587.49
  6. Step 6: Final answer
    x = 469,892.00

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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.