Home / 860,130.62-1,290,213.66-313,004.30

Finding the Fourth Proportional to 860,130.62, 1,290,213.66 and 313,004.30

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Solution

The fourth proportional to 860,130.62, 1,290,213.66 and 313,004.30 is: 469,512.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,130.62 : 1,290,213.66 = 313,004.30 : x
  2. Step 2: Convert to fraction form
    860,130.62/1,290,213.66 = 313,004.30/x
  3. Step 3: Cross multiply
    860,130.62x = 1,290,213.66 × 313,004.30
  4. Step 4: Simplify right side
    860,130.62x = 403,842,423,498.74
  5. Step 5: Solve for x
    x = 403,842,423,498.74/860,130.62
  6. Step 6: Final answer
    x = 469,512.90

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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.