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Finding the Fourth Proportional to 631,603.40, 947,405.10 and 365,226.80

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Solution

The fourth proportional to 631,603.40, 947,405.10 and 365,226.80 is: 547,840.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,603.40 : 947,405.10 = 365,226.80 : x
  2. Step 2: Convert to fraction form
    631,603.40/947,405.10 = 365,226.80/x
  3. Step 3: Cross multiply
    631,603.40x = 947,405.10 × 365,226.80
  4. Step 4: Simplify right side
    631,603.40x = 346,017,732,976.68
  5. Step 5: Solve for x
    x = 346,017,732,976.68/631,603.40
  6. Step 6: Final answer
    x = 547,840.20

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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.