Home / 780,070.80-1,169,231.40-330,715.20

Finding the Fourth Proportional to 780,070.80, 1,169,231.40 and 330,715.20

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Solution

The fourth proportional to 780,070.80, 1,169,231.40 and 330,715.20 is: 495,701.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,070.80 : 1,169,231.40 = 330,715.20 : x
  2. Step 2: Convert to fraction form
    780,070.80/1,169,231.40 = 330,715.20/x
  3. Step 3: Cross multiply
    780,070.80x = 1,169,231.40 × 330,715.20
  4. Step 4: Simplify right side
    780,070.80x = 386,682,596,297.28
  5. Step 5: Solve for x
    x = 386,682,596,297.28/780,070.80
  6. Step 6: Final answer
    x = 495,701.92

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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.