Home / 779,786.20-1,170,116.70-330,430.60

Finding the Fourth Proportional to 779,786.20, 1,170,116.70 and 330,430.60

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Solution

The fourth proportional to 779,786.20, 1,170,116.70 and 330,430.60 is: 495,831.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,786.20 : 1,170,116.70 = 330,430.60 : x
  2. Step 2: Convert to fraction form
    779,786.20/1,170,116.70 = 330,430.60/x
  3. Step 3: Cross multiply
    779,786.20x = 1,170,116.70 × 330,430.60
  4. Step 4: Simplify right side
    779,786.20x = 386,642,363,251.02
  5. Step 5: Solve for x
    x = 386,642,363,251.02/779,786.20
  6. Step 6: Final answer
    x = 495,831.25

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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.