Home / 831,999.80-1,247,999.70-333,721.40

Finding the Fourth Proportional to 831,999.80, 1,247,999.70 and 333,721.40

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Solution

The fourth proportional to 831,999.80, 1,247,999.70 and 333,721.40 is: 500,582.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,999.80 : 1,247,999.70 = 333,721.40 : x
  2. Step 2: Convert to fraction form
    831,999.80/1,247,999.70 = 333,721.40/x
  3. Step 3: Cross multiply
    831,999.80x = 1,247,999.70 × 333,721.40
  4. Step 4: Simplify right side
    831,999.80x = 416,484,207,083.58
  5. Step 5: Solve for x
    x = 416,484,207,083.58/831,999.80
  6. Step 6: Final answer
    x = 500,582.10

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1.5x scale

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.