Home / 1,389,703.76-2,084,915.02-813,813.38

Finding the Fourth Proportional to 1,389,703.76, 2,084,915.02 and 813,813.38

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Solution

The fourth proportional to 1,389,703.76, 2,084,915.02 and 813,813.38 is: 1,220,930.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,703.76 : 2,084,915.02 = 813,813.38 : x
  2. Step 2: Convert to fraction form
    1,389,703.76/2,084,915.02 = 813,813.38/x
  3. Step 3: Cross multiply
    1,389,703.76x = 2,084,915.02 × 813,813.38
  4. Step 4: Simplify right side
    1,389,703.76x = 1,696,731,726,979.86
  5. Step 5: Solve for x
    x = 1,696,731,726,979.86/1,389,703.76
  6. Step 6: Final answer
    x = 1,220,930.52

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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.