Home / 631,561.20-947,405.55-205,079.19

Finding the Fourth Proportional to 631,561.20, 947,405.55 and 205,079.19

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Solution

The fourth proportional to 631,561.20, 947,405.55 and 205,079.19 is: 307,639.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,561.20 : 947,405.55 = 205,079.19 : x
  2. Step 2: Convert to fraction form
    631,561.20/947,405.55 = 205,079.19/x
  3. Step 3: Cross multiply
    631,561.20x = 947,405.55 × 205,079.19
  4. Step 4: Simplify right side
    631,561.20x = 194,293,162,795.51
  5. Step 5: Solve for x
    x = 194,293,162,795.51/631,561.20
  6. Step 6: Final answer
    x = 307,639.49

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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.