Home / 508,867.36-766,958.73-438,637.66

Finding the Fourth Proportional to 508,867.36, 766,958.73 and 438,637.66

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Solution

The fourth proportional to 508,867.36, 766,958.73 and 438,637.66 is: 661,109.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,867.36 : 766,958.73 = 438,637.66 : x
  2. Step 2: Convert to fraction form
    508,867.36/766,958.73 = 438,637.66/x
  3. Step 3: Cross multiply
    508,867.36x = 766,958.73 × 438,637.66
  4. Step 4: Simplify right side
    508,867.36x = 336,416,982,643.77
  5. Step 5: Solve for x
    x = 336,416,982,643.77/508,867.36
  6. Step 6: Final answer
    x = 661,109.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.