Home / 743,819.76-1,026,449.82-421,560.18

Finding the Fourth Proportional to 743,819.76, 1,026,449.82 and 421,560.18

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Solution

The fourth proportional to 743,819.76, 1,026,449.82 and 421,560.18 is: 581,740.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,819.76 : 1,026,449.82 = 421,560.18 : x
  2. Step 2: Convert to fraction form
    743,819.76/1,026,449.82 = 421,560.18/x
  3. Step 3: Cross multiply
    743,819.76x = 1,026,449.82 × 421,560.18
  4. Step 4: Simplify right side
    743,819.76x = 432,710,370,880.17
  5. Step 5: Solve for x
    x = 432,710,370,880.17/743,819.76
  6. Step 6: Final answer
    x = 581,740.89

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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.