Home / 631,404.63-947,115.15-210,680.51

Finding the Fourth Proportional to 631,404.63, 947,115.15 and 210,680.51

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Solution

The fourth proportional to 631,404.63, 947,115.15 and 210,680.51 is: 316,023.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,404.63 : 947,115.15 = 210,680.51 : x
  2. Step 2: Convert to fraction form
    631,404.63/947,115.15 = 210,680.51/x
  3. Step 3: Cross multiply
    631,404.63x = 947,115.15 × 210,680.51
  4. Step 4: Simplify right side
    631,404.63x = 199,538,702,830.73
  5. Step 5: Solve for x
    x = 199,538,702,830.73/631,404.63
  6. Step 6: Final answer
    x = 316,023.50

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Half scale
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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.