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Finding the Fourth Proportional to 561,567.70, 842,351.55 and 348,991.30

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Solution

The fourth proportional to 561,567.70, 842,351.55 and 348,991.30 is: 523,486.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,567.70 : 842,351.55 = 348,991.30 : x
  2. Step 2: Convert to fraction form
    561,567.70/842,351.55 = 348,991.30/x
  3. Step 3: Cross multiply
    561,567.70x = 842,351.55 × 348,991.30
  4. Step 4: Simplify right side
    561,567.70x = 293,973,362,491.52
  5. Step 5: Solve for x
    x = 293,973,362,491.52/561,567.70
  6. Step 6: Final answer
    x = 523,486.95

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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.