Home / 787,000.30-1,180,986.45-313,636.30

Finding the Fourth Proportional to 787,000.30, 1,180,986.45 and 313,636.30

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Solution

The fourth proportional to 787,000.30, 1,180,986.45 and 313,636.30 is: 470,648.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,000.30 : 1,180,986.45 = 313,636.30 : x
  2. Step 2: Convert to fraction form
    787,000.30/1,180,986.45 = 313,636.30/x
  3. Step 3: Cross multiply
    787,000.30x = 1,180,986.45 × 313,636.30
  4. Step 4: Simplify right side
    787,000.30x = 370,400,220,528.14
  5. Step 5: Solve for x
    x = 370,400,220,528.14/787,000.30
  6. Step 6: Final answer
    x = 470,648.13

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Double scale
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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.