Home / 769,513.80-1,154,270.70-208,548.30

Finding the Fourth Proportional to 769,513.80, 1,154,270.70 and 208,548.30

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Solution

The fourth proportional to 769,513.80, 1,154,270.70 and 208,548.30 is: 312,822.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,513.80 : 1,154,270.70 = 208,548.30 : x
  2. Step 2: Convert to fraction form
    769,513.80/1,154,270.70 = 208,548.30/x
  3. Step 3: Cross multiply
    769,513.80x = 1,154,270.70 × 208,548.30
  4. Step 4: Simplify right side
    769,513.80x = 240,721,192,224.81
  5. Step 5: Solve for x
    x = 240,721,192,224.81/769,513.80
  6. Step 6: Final answer
    x = 312,822.45

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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.