Home / 780,106.20-1,169,237.70-330,826.20

Finding the Fourth Proportional to 780,106.20, 1,169,237.70 and 330,826.20

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Solution

The fourth proportional to 780,106.20, 1,169,237.70 and 330,826.20 is: 495,848.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,106.20 : 1,169,237.70 = 330,826.20 : x
  2. Step 2: Convert to fraction form
    780,106.20/1,169,237.70 = 330,826.20/x
  3. Step 3: Cross multiply
    780,106.20x = 1,169,237.70 × 330,826.20
  4. Step 4: Simplify right side
    780,106.20x = 386,814,465,187.74
  5. Step 5: Solve for x
    x = 386,814,465,187.74/780,106.20
  6. Step 6: Final answer
    x = 495,848.47

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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.