Home / 749,734.49-1,123,911.79-407,678.18

Finding the Fourth Proportional to 749,734.49, 1,123,911.79 and 407,678.18

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Solution

The fourth proportional to 749,734.49, 1,123,911.79 and 407,678.18 is: 611,142.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,734.49 : 1,123,911.79 = 407,678.18 : x
  2. Step 2: Convert to fraction form
    749,734.49/1,123,911.79 = 407,678.18/x
  3. Step 3: Cross multiply
    749,734.49x = 1,123,911.79 × 407,678.18
  4. Step 4: Simplify right side
    749,734.49x = 458,194,306,388.99
  5. Step 5: Solve for x
    x = 458,194,306,388.99/749,734.49
  6. Step 6: Final answer
    x = 611,142.09

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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.