Home / 743,433.75-1,025,989.31-421,146.49

Finding the Fourth Proportional to 743,433.75, 1,025,989.31 and 421,146.49

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Solution

The fourth proportional to 743,433.75, 1,025,989.31 and 421,146.49 is: 581,210.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,433.75 : 1,025,989.31 = 421,146.49 : x
  2. Step 2: Convert to fraction form
    743,433.75/1,025,989.31 = 421,146.49/x
  3. Step 3: Cross multiply
    743,433.75x = 1,025,989.31 × 421,146.49
  4. Step 4: Simplify right side
    743,433.75x = 432,091,796,684.02
  5. Step 5: Solve for x
    x = 432,091,796,684.02/743,433.75
  6. Step 6: Final answer
    x = 581,210.90

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1.5x scale

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.