Home / 743,586.72-1,026,146.96-421,358.16

Finding the Fourth Proportional to 743,586.72, 1,026,146.96 and 421,358.16

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Solution

The fourth proportional to 743,586.72, 1,026,146.96 and 421,358.16 is: 581,472.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,586.72 : 1,026,146.96 = 421,358.16 : x
  2. Step 2: Convert to fraction form
    743,586.72/1,026,146.96 = 421,358.16/x
  3. Step 3: Cross multiply
    743,586.72x = 1,026,146.96 × 421,358.16
  4. Step 4: Simplify right side
    743,586.72x = 432,375,394,955.19
  5. Step 5: Solve for x
    x = 432,375,394,955.19/743,586.72
  6. Step 6: Final answer
    x = 581,472.72

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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.