Home / 743,538.30-1,026,085.41-421,308.06

Finding the Fourth Proportional to 743,538.30, 1,026,085.41 and 421,308.06

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Solution

The fourth proportional to 743,538.30, 1,026,085.41 and 421,308.06 is: 581,406.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,538.30 : 1,026,085.41 = 421,308.06 : x
  2. Step 2: Convert to fraction form
    743,538.30/1,026,085.41 = 421,308.06/x
  3. Step 3: Cross multiply
    743,538.30x = 1,026,085.41 × 421,308.06
  4. Step 4: Simplify right side
    743,538.30x = 432,298,053,481.41
  5. Step 5: Solve for x
    x = 432,298,053,481.41/743,538.30
  6. Step 6: Final answer
    x = 581,406.57

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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.