Home / 743,664.61-1,026,173.71-421,305.67

Finding the Fourth Proportional to 743,664.61, 1,026,173.71 and 421,305.67

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Solution

The fourth proportional to 743,664.61, 1,026,173.71 and 421,305.67 is: 581,354.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,664.61 : 1,026,173.71 = 421,305.67 : x
  2. Step 2: Convert to fraction form
    743,664.61/1,026,173.71 = 421,305.67/x
  3. Step 3: Cross multiply
    743,664.61x = 1,026,173.71 × 421,305.67
  4. Step 4: Simplify right side
    743,664.61x = 432,332,802,427.94
  5. Step 5: Solve for x
    x = 432,332,802,427.94/743,664.61
  6. Step 6: Final answer
    x = 581,354.55

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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.