Home / 743,445.84-1,025,957.76-421,215.60

Finding the Fourth Proportional to 743,445.84, 1,025,957.76 and 421,215.60

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Solution

The fourth proportional to 743,445.84, 1,025,957.76 and 421,215.60 is: 581,278.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,445.84 : 1,025,957.76 = 421,215.60 : x
  2. Step 2: Convert to fraction form
    743,445.84/1,025,957.76 = 421,215.60/x
  3. Step 3: Cross multiply
    743,445.84x = 1,025,957.76 × 421,215.60
  4. Step 4: Simplify right side
    743,445.84x = 432,149,413,453.06
  5. Step 5: Solve for x
    x = 432,149,413,453.06/743,445.84
  6. Step 6: Final answer
    x = 581,278.94

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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.