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Finding the Fourth Proportional to 605,237.10, 907,855.65 and 310,325.10

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Solution

The fourth proportional to 605,237.10, 907,855.65 and 310,325.10 is: 465,487.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,237.10 : 907,855.65 = 310,325.10 : x
  2. Step 2: Convert to fraction form
    605,237.10/907,855.65 = 310,325.10/x
  3. Step 3: Cross multiply
    605,237.10x = 907,855.65 × 310,325.10
  4. Step 4: Simplify right side
    605,237.10x = 281,730,395,371.82
  5. Step 5: Solve for x
    x = 281,730,395,371.82/605,237.10
  6. Step 6: Final answer
    x = 465,487.65

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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.