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Finding the Fourth Proportional to 604,817.10, 907,225.65 and 309,905.10

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Solution

The fourth proportional to 604,817.10, 907,225.65 and 309,905.10 is: 464,857.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,817.10 : 907,225.65 = 309,905.10 : x
  2. Step 2: Convert to fraction form
    604,817.10/907,225.65 = 309,905.10/x
  3. Step 3: Cross multiply
    604,817.10x = 907,225.65 × 309,905.10
  4. Step 4: Simplify right side
    604,817.10x = 281,153,855,785.82
  5. Step 5: Solve for x
    x = 281,153,855,785.82/604,817.10
  6. Step 6: Final answer
    x = 464,857.65

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Double scale
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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.