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Finding the Fourth Proportional to 480,450.79, 663,123.46 and 399,799.70

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Solution

The fourth proportional to 480,450.79, 663,123.46 and 399,799.70 is: 551,807.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,450.79 : 663,123.46 = 399,799.70 : x
  2. Step 2: Convert to fraction form
    480,450.79/663,123.46 = 399,799.70/x
  3. Step 3: Cross multiply
    480,450.79x = 663,123.46 × 399,799.70
  4. Step 4: Simplify right side
    480,450.79x = 265,116,559,292.18
  5. Step 5: Solve for x
    x = 265,116,559,292.18/480,450.79
  6. Step 6: Final answer
    x = 551,807.94

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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.