Home / 780,148.20-1,169,300.70-330,868.20

Finding the Fourth Proportional to 780,148.20, 1,169,300.70 and 330,868.20

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Solution

The fourth proportional to 780,148.20, 1,169,300.70 and 330,868.20 is: 495,911.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,148.20 : 1,169,300.70 = 330,868.20 : x
  2. Step 2: Convert to fraction form
    780,148.20/1,169,300.70 = 330,868.20/x
  3. Step 3: Cross multiply
    780,148.20x = 1,169,300.70 × 330,868.20
  4. Step 4: Simplify right side
    780,148.20x = 386,884,417,867.74
  5. Step 5: Solve for x
    x = 386,884,417,867.74/780,148.20
  6. Step 6: Final answer
    x = 495,911.44

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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.