Home / 743,129.78-1,114,409.43-316,395.05

Finding the Fourth Proportional to 743,129.78, 1,114,409.43 and 316,395.05

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Solution

The fourth proportional to 743,129.78, 1,114,409.43 and 316,395.05 is: 474,471.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,129.78 : 1,114,409.43 = 316,395.05 : x
  2. Step 2: Convert to fraction form
    743,129.78/1,114,409.43 = 316,395.05/x
  3. Step 3: Cross multiply
    743,129.78x = 1,114,409.43 × 316,395.05
  4. Step 4: Simplify right side
    743,129.78x = 352,593,621,753.27
  5. Step 5: Solve for x
    x = 352,593,621,753.27/743,129.78
  6. Step 6: Final answer
    x = 474,471.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.