Home / 942,009.45-1,299,960.79-512,280.36

Finding the Fourth Proportional to 942,009.45, 1,299,960.79 and 512,280.36

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Solution

The fourth proportional to 942,009.45, 1,299,960.79 and 512,280.36 is: 706,940.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    942,009.45 : 1,299,960.79 = 512,280.36 : x
  2. Step 2: Convert to fraction form
    942,009.45/1,299,960.79 = 512,280.36/x
  3. Step 3: Cross multiply
    942,009.45x = 1,299,960.79 × 512,280.36
  4. Step 4: Simplify right side
    942,009.45x = 665,944,381,487.08
  5. Step 5: Solve for x
    x = 665,944,381,487.08/942,009.45
  6. Step 6: Final answer
    x = 706,940.23

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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.