Home / 743,411.25-1,025,928.51-421,121.25

Finding the Fourth Proportional to 743,411.25, 1,025,928.51 and 421,121.25

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Solution

The fourth proportional to 743,411.25, 1,025,928.51 and 421,121.25 is: 581,159.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,411.25 : 1,025,928.51 = 421,121.25 : x
  2. Step 2: Convert to fraction form
    743,411.25/1,025,928.51 = 421,121.25/x
  3. Step 3: Cross multiply
    743,411.25x = 1,025,928.51 × 421,121.25
  4. Step 4: Simplify right side
    743,411.25x = 432,040,296,541.84
  5. Step 5: Solve for x
    x = 432,040,296,541.84/743,411.25
  6. Step 6: Final answer
    x = 581,159.21

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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.