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Finding the Fourth Proportional to 458,495.91, 631,416.47 and 330,969.51

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Solution

The fourth proportional to 458,495.91, 631,416.47 and 330,969.51 is: 455,793.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,495.91 : 631,416.47 = 330,969.51 : x
  2. Step 2: Convert to fraction form
    458,495.91/631,416.47 = 330,969.51/x
  3. Step 3: Cross multiply
    458,495.91x = 631,416.47 × 330,969.51
  4. Step 4: Simplify right side
    458,495.91x = 208,979,598,026.98
  5. Step 5: Solve for x
    x = 208,979,598,026.98/458,495.91
  6. Step 6: Final answer
    x = 455,793.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.