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Finding the Fourth Proportional to 561,206.40, 774,452.25 and 306,558.60

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Solution

The fourth proportional to 561,206.40, 774,452.25 and 306,558.60 is: 423,044.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,206.40 : 774,452.25 = 306,558.60 : x
  2. Step 2: Convert to fraction form
    561,206.40/774,452.25 = 306,558.60/x
  3. Step 3: Cross multiply
    561,206.40x = 774,452.25 × 306,558.60
  4. Step 4: Simplify right side
    561,206.40x = 237,414,997,526.85
  5. Step 5: Solve for x
    x = 237,414,997,526.85/561,206.40
  6. Step 6: Final answer
    x = 423,044.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.