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Finding the Fourth Proportional to 637,980.60, 956,970.90 and 449,023.80

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Solution

The fourth proportional to 637,980.60, 956,970.90 and 449,023.80 is: 673,535.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,980.60 : 956,970.90 = 449,023.80 : x
  2. Step 2: Convert to fraction form
    637,980.60/956,970.90 = 449,023.80/x
  3. Step 3: Cross multiply
    637,980.60x = 956,970.90 × 449,023.80
  4. Step 4: Simplify right side
    637,980.60x = 429,702,710,007.42
  5. Step 5: Solve for x
    x = 429,702,710,007.42/637,980.60
  6. Step 6: Final answer
    x = 673,535.70

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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.