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Finding the Fourth Proportional to 610,436.20, 915,435.60 and 310,817.20

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Solution

The fourth proportional to 610,436.20, 915,435.60 and 310,817.20 is: 466,114.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,436.20 : 915,435.60 = 310,817.20 : x
  2. Step 2: Convert to fraction form
    610,436.20/915,435.60 = 310,817.20/x
  3. Step 3: Cross multiply
    610,436.20x = 915,435.60 × 310,817.20
  4. Step 4: Simplify right side
    610,436.20x = 284,533,129,972.32
  5. Step 5: Solve for x
    x = 284,533,129,972.32/610,436.20
  6. Step 6: Final answer
    x = 466,114.44

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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.