Home / 1,095,489.80-1,643,234.70-385,512.20

Finding the Fourth Proportional to 1,095,489.80, 1,643,234.70 and 385,512.20

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Solution

The fourth proportional to 1,095,489.80, 1,643,234.70 and 385,512.20 is: 578,268.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,095,489.80 : 1,643,234.70 = 385,512.20 : x
  2. Step 2: Convert to fraction form
    1,095,489.80/1,643,234.70 = 385,512.20/x
  3. Step 3: Cross multiply
    1,095,489.80x = 1,643,234.70 × 385,512.20
  4. Step 4: Simplify right side
    1,095,489.80x = 633,487,024,313.34
  5. Step 5: Solve for x
    x = 633,487,024,313.34/1,095,489.80
  6. Step 6: Final answer
    x = 578,268.30

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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.