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Finding the Fourth Proportional to 538,706.10, 808,059.15 and 349,749.30

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Solution

The fourth proportional to 538,706.10, 808,059.15 and 349,749.30 is: 524,623.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,706.10 : 808,059.15 = 349,749.30 : x
  2. Step 2: Convert to fraction form
    538,706.10/808,059.15 = 349,749.30/x
  3. Step 3: Cross multiply
    538,706.10x = 808,059.15 × 349,749.30
  4. Step 4: Simplify right side
    538,706.10x = 282,618,122,071.10
  5. Step 5: Solve for x
    x = 282,618,122,071.10/538,706.10
  6. Step 6: Final answer
    x = 524,623.95

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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.