Home / 779,910.40-1,169,865.60-646,940.80

Finding the Fourth Proportional to 779,910.40, 1,169,865.60 and 646,940.80

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Solution

The fourth proportional to 779,910.40, 1,169,865.60 and 646,940.80 is: 970,411.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,910.40 : 1,169,865.60 = 646,940.80 : x
  2. Step 2: Convert to fraction form
    779,910.40/1,169,865.60 = 646,940.80/x
  3. Step 3: Cross multiply
    779,910.40x = 1,169,865.60 × 646,940.80
  4. Step 4: Simplify right side
    779,910.40x = 756,833,787,156.48
  5. Step 5: Solve for x
    x = 756,833,787,156.48/779,910.40
  6. Step 6: Final answer
    x = 970,411.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.