Home / 780,341.63-1,170,512.30-219,376.13

Finding the Fourth Proportional to 780,341.63, 1,170,512.30 and 219,376.13

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Solution

The fourth proportional to 780,341.63, 1,170,512.30 and 219,376.13 is: 329,064.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,341.63 : 1,170,512.30 = 219,376.13 : x
  2. Step 2: Convert to fraction form
    780,341.63/1,170,512.30 = 219,376.13/x
  3. Step 3: Cross multiply
    780,341.63x = 1,170,512.30 × 219,376.13
  4. Step 4: Simplify right side
    780,341.63x = 256,782,457,394.52
  5. Step 5: Solve for x
    x = 256,782,457,394.52/780,341.63
  6. Step 6: Final answer
    x = 329,064.15

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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.