Home / 743,664.11-1,026,173.02-421,305.17

Finding the Fourth Proportional to 743,664.11, 1,026,173.02 and 421,305.17

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Solution

The fourth proportional to 743,664.11, 1,026,173.02 and 421,305.17 is: 581,353.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,664.11 : 1,026,173.02 = 421,305.17 : x
  2. Step 2: Convert to fraction form
    743,664.11/1,026,173.02 = 421,305.17/x
  3. Step 3: Cross multiply
    743,664.11x = 1,026,173.02 × 421,305.17
  4. Step 4: Simplify right side
    743,664.11x = 432,331,996,533.99
  5. Step 5: Solve for x
    x = 432,331,996,533.99/743,664.11
  6. Step 6: Final answer
    x = 581,353.85

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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.