Home / 782,405.73-1,079,746.47-438,256.44

Finding the Fourth Proportional to 782,405.73, 1,079,746.47 and 438,256.44

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Solution

The fourth proportional to 782,405.73, 1,079,746.47 and 438,256.44 is: 604,808.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,405.73 : 1,079,746.47 = 438,256.44 : x
  2. Step 2: Convert to fraction form
    782,405.73/1,079,746.47 = 438,256.44/x
  3. Step 3: Cross multiply
    782,405.73x = 1,079,746.47 × 438,256.44
  4. Step 4: Simplify right side
    782,405.73x = 473,205,844,044.77
  5. Step 5: Solve for x
    x = 473,205,844,044.77/782,405.73
  6. Step 6: Final answer
    x = 604,808.77

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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.