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Finding the Fourth Proportional to 631,427.40, 947,141.10 and 365,050.80

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Solution

The fourth proportional to 631,427.40, 947,141.10 and 365,050.80 is: 547,576.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,427.40 : 947,141.10 = 365,050.80 : x
  2. Step 2: Convert to fraction form
    631,427.40/947,141.10 = 365,050.80/x
  3. Step 3: Cross multiply
    631,427.40x = 947,141.10 × 365,050.80
  4. Step 4: Simplify right side
    631,427.40x = 345,754,616,267.88
  5. Step 5: Solve for x
    x = 345,754,616,267.88/631,427.40
  6. Step 6: Final answer
    x = 547,576.20

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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.