Home / 508,860.36-766,948.16-438,630.66

Finding the Fourth Proportional to 508,860.36, 766,948.16 and 438,630.66

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Solution

The fourth proportional to 508,860.36, 766,948.16 and 438,630.66 is: 661,098.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,860.36 : 766,948.16 = 438,630.66 : x
  2. Step 2: Convert to fraction form
    508,860.36/766,948.16 = 438,630.66/x
  3. Step 3: Cross multiply
    508,860.36x = 766,948.16 × 438,630.66
  4. Step 4: Simplify right side
    508,860.36x = 336,406,978,703.16
  5. Step 5: Solve for x
    x = 336,406,978,703.16/508,860.36
  6. Step 6: Final answer
    x = 661,098.81

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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.