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Finding the Fourth Proportional to 670,503.60, 1,004,443.20 and 403,470.90

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Solution

The fourth proportional to 670,503.60, 1,004,443.20 and 403,470.90 is: 604,416.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,503.60 : 1,004,443.20 = 403,470.90 : x
  2. Step 2: Convert to fraction form
    670,503.60/1,004,443.20 = 403,470.90/x
  3. Step 3: Cross multiply
    670,503.60x = 1,004,443.20 × 403,470.90
  4. Step 4: Simplify right side
    670,503.60x = 405,263,601,902.88
  5. Step 5: Solve for x
    x = 405,263,601,902.88/670,503.60
  6. Step 6: Final answer
    x = 604,416.74

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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.