Home / 782,231.18-1,079,389.79-438,019.25

Finding the Fourth Proportional to 782,231.18, 1,079,389.79 and 438,019.25

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Solution

The fourth proportional to 782,231.18, 1,079,389.79 and 438,019.25 is: 604,416.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,231.18 : 1,079,389.79 = 438,019.25 : x
  2. Step 2: Convert to fraction form
    782,231.18/1,079,389.79 = 438,019.25/x
  3. Step 3: Cross multiply
    782,231.18x = 1,079,389.79 × 438,019.25
  4. Step 4: Simplify right side
    782,231.18x = 472,793,498,686.41
  5. Step 5: Solve for x
    x = 472,793,498,686.41/782,231.18
  6. Step 6: Final answer
    x = 604,416.59

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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.