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Finding the Fourth Proportional to 604,844.60, 907,266.90 and 339,423.80

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Solution

The fourth proportional to 604,844.60, 907,266.90 and 339,423.80 is: 509,135.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,844.60 : 907,266.90 = 339,423.80 : x
  2. Step 2: Convert to fraction form
    604,844.60/907,266.90 = 339,423.80/x
  3. Step 3: Cross multiply
    604,844.60x = 907,266.90 × 339,423.80
  4. Step 4: Simplify right side
    604,844.60x = 307,947,978,812.22
  5. Step 5: Solve for x
    x = 307,947,978,812.22/604,844.60
  6. Step 6: Final answer
    x = 509,135.70

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Similar ratio
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1.5x scale

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.