Home / 782,434.92-1,079,685.54-621,679.08

Finding the Fourth Proportional to 782,434.92, 1,079,685.54 and 621,679.08

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Solution

The fourth proportional to 782,434.92, 1,079,685.54 and 621,679.08 is: 857,857.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,434.92 : 1,079,685.54 = 621,679.08 : x
  2. Step 2: Convert to fraction form
    782,434.92/1,079,685.54 = 621,679.08/x
  3. Step 3: Cross multiply
    782,434.92x = 1,079,685.54 × 621,679.08
  4. Step 4: Simplify right side
    782,434.92x = 671,217,913,196.50
  5. Step 5: Solve for x
    x = 671,217,913,196.50/782,434.92
  6. Step 6: Final answer
    x = 857,857.82

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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.