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Finding the Fourth Proportional to 610,440.20, 915,660.30 and 492,342.20

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Solution

The fourth proportional to 610,440.20, 915,660.30 and 492,342.20 is: 738,513.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,440.20 : 915,660.30 = 492,342.20 : x
  2. Step 2: Convert to fraction form
    610,440.20/915,660.30 = 492,342.20/x
  3. Step 3: Cross multiply
    610,440.20x = 915,660.30 × 492,342.20
  4. Step 4: Simplify right side
    610,440.20x = 450,818,206,554.66
  5. Step 5: Solve for x
    x = 450,818,206,554.66/610,440.20
  6. Step 6: Final answer
    x = 738,513.30

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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.