Home / 420,724.73-631,316.72-243,577.73

Finding the Fourth Proportional to 420,724.73, 631,316.72 and 243,577.73

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Solution

The fourth proportional to 420,724.73, 631,316.72 and 243,577.73 is: 365,499.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,724.73 : 631,316.72 = 243,577.73 : x
  2. Step 2: Convert to fraction form
    420,724.73/631,316.72 = 243,577.73/x
  3. Step 3: Cross multiply
    420,724.73x = 631,316.72 × 243,577.73
  4. Step 4: Simplify right side
    420,724.73x = 153,774,695,755.88
  5. Step 5: Solve for x
    x = 153,774,695,755.88/420,724.73
  6. Step 6: Final answer
    x = 365,499.54

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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.